diff --git a/cmd/genblocks/main.go b/cmd/genblocks/main.go
new file mode 100644
index 0000000..a920e22
--- /dev/null
+++ b/cmd/genblocks/main.go
@@ -0,0 +1,39 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+func main() {
+	f, err := os.Open("generated/reports/blocks.json")
+	if err != nil {
+		panic(err)
+	}
+	var data map[string]struct {
+		States []struct {
+			ID      int  `json:"id"`
+			Default bool `json:"default"`
+		} `json:"states"`
+	}
+	if err := json.NewDecoder(f).Decode(&data); err != nil {
+		panic(err)
+	}
+
+	out, _ := os.Create("internal/worldgen/generated_blocks.go")
+	fmt.Fprintln(out, "package worldgen")
+	fmt.Fprintln(out, "")
+	fmt.Fprintln(out, "// defaultBlockIDs maps block names to their default state ID.")
+	fmt.Fprintln(out, "var defaultBlockIDs = map[string]uint16{")
+
+	for name, block := range data {
+		for _, state := range block.States {
+			if state.Default {
+				fmt.Fprintf(out, "\t%q: %d,\n", name, state.ID)
+			}
+		}
+	}
+	fmt.Fprintln(out, "}")
+	out.Close()
+}
diff --git a/internal/world/vanilla.go b/internal/world/vanilla.go
index 4b120c7..ebacad8 100644
--- a/internal/world/vanilla.go
+++ b/internal/world/vanilla.go
@@ -111,7 +111,7 @@ func generateVanilla(od *worldgen.OverworldDensity, seed int64, cx, cz int32) *C
 		}
 	}
 	fillBiomes3D(c, od, s2D, baseX, baseZ)
-	decorate(c, cx, cz, seed, &surfTop, &grass, &biomeName)
+	decorate(c, od, cx, cz, seed, &surfTop, &grass, &biomeName)
 	return c
 }
 
@@ -300,7 +300,7 @@ func bedrockAt(rng chunkRand, d int) bool {
 // decorate places simple oak trees on grassy columns. Trunks are kept two
 // blocks inside the chunk so the radius-2 canopy never crosses into a neighbour
 // (avoiding cross-chunk coordination); placement is deterministic per chunk.
-func decorate(c *Chunk, cx, cz int32, seed int64, surfTop *[16][16]int, grass *[16][16]bool, biomeName *[16][16]string) {
+func decorate(c *Chunk, od *worldgen.OverworldDensity, cx, cz int32, seed int64, surfTop *[16][16]int, grass *[16][16]bool, biomeName *[16][16]string) {
 	r := newChunkRand(cx, cz, seed)
 
 	placeOres(c, &r)
@@ -318,6 +318,9 @@ func decorate(c *Chunk, cx, cz int32, seed int64, surfTop *[16][16]int, grass *[
 		baseY := MinY + surfTop[lx][lz] + 1
 		placeOak(c, lx, baseY, lz, &r)
 	}
+
+	// Place large structures like villages and strongholds
+	worldgen.PlaceStructures(c, od, cx, cz, seed, surfTop, biomeName)
 }
 
 func placeOak(c *Chunk, lx, baseY, lz int, r *chunkRand) {
diff --git a/internal/worldgen/data/structure/village/plains/houses/plains_small_house_1.nbt b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_1.nbt
new file mode 100644
index 0000000..64d7d82
Binary files /dev/null and b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_1.nbt differ
diff --git a/internal/worldgen/data/structure/village/plains/houses/plains_small_house_2.nbt b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_2.nbt
new file mode 100644
index 0000000..bde690e
Binary files /dev/null and b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_2.nbt differ
diff --git a/internal/worldgen/data/structure/village/plains/houses/plains_small_house_3.nbt b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_3.nbt
new file mode 100644
index 0000000..048e589
Binary files /dev/null and b/internal/worldgen/data/structure/village/plains/houses/plains_small_house_3.nbt differ
diff --git a/internal/worldgen/data/structure/village/plains/streets/straight_01.nbt b/internal/worldgen/data/structure/village/plains/streets/straight_01.nbt
new file mode 100644
index 0000000..3dea9e8
Binary files /dev/null and b/internal/worldgen/data/structure/village/plains/streets/straight_01.nbt differ
diff --git a/internal/worldgen/data/structure/village/plains/town_centers/plains_meeting_point_1.nbt b/internal/worldgen/data/structure/village/plains/town_centers/plains_meeting_point_1.nbt
new file mode 100644
index 0000000..327d049
Binary files /dev/null and b/internal/worldgen/data/structure/village/plains/town_centers/plains_meeting_point_1.nbt differ
diff --git a/internal/worldgen/generated_blocks.go b/internal/worldgen/generated_blocks.go
new file mode 100644
index 0000000..94ad2d4
--- /dev/null
+++ b/internal/worldgen/generated_blocks.go
@@ -0,0 +1,1173 @@
+package worldgen
+
+// defaultBlockIDs maps block names to their default state ID.
+var defaultBlockIDs = map[string]uint16{
+	"minecraft:attached_pumpkin_stem": 8334,
+	"minecraft:big_dripleaf_stem": 27896,
+	"minecraft:bubble_coral_fan": 15181,
+	"minecraft:dark_oak_log": 155,
+	"minecraft:glow_lichen": 8517,
+	"minecraft:nether_wart": 9447,
+	"minecraft:target": 21752,
+	"minecraft:conduit": 15276,
+	"minecraft:potted_oak_sapling": 10631,
+	"minecraft:waxed_copper_bars": 8149,
+	"minecraft:dead_brain_coral": 15149,
+	"minecraft:green_shulker_box": 14952,
+	"minecraft:lime_bed": 2014,
+	"minecraft:oxidized_copper_grate": 27054,
+	"minecraft:black_stained_glass": 7113,
+	"minecraft:budding_amethyst": 23403,
+	"minecraft:deepslate_emerald_ore": 9574,
+	"minecraft:oak_wood": 202,
+	"minecraft:obsidian": 3369,
+	"minecraft:pink_concrete_powder": 15052,
+	"minecraft:prismarine_bricks": 12632,
+	"minecraft:acacia_sapling": 37,
+	"minecraft:brain_coral": 15159,
+	"minecraft:dark_oak_fence": 13963,
+	"minecraft:oak_pressure_plate": 6862,
+	"minecraft:oak_trapdoor": 7129,
+	"minecraft:tall_dry_grass": 2253,
+	"minecraft:bamboo_shelf": 2673,
+	"minecraft:chiseled_quartz_block": 11324,
+	"minecraft:cyan_stained_glass": 7107,
+	"minecraft:golden_dandelion": 2322,
+	"minecraft:green_bed": 2142,
+	"minecraft:orange_tulip": 2329,
+	"minecraft:player_head": 11051,
+	"minecraft:waxed_exposed_copper_grate": 27058,
+	"minecraft:end_portal": 9468,
+	"minecraft:oak_leaves": 279,
+	"minecraft:red_concrete": 15044,
+	"minecraft:soul_wall_torch": 7007,
+	"minecraft:tube_coral": 15157,
+	"minecraft:warped_fungus": 20958,
+	"minecraft:warped_hanging_sign": 6532,
+	"minecraft:waxed_oxidized_cut_copper_stairs": 25690,
+	"minecraft:stone_brick_wall": 18117,
+	"minecraft:andesite_slab": 16473,
+	"minecraft:chiseled_sandstone": 579,
+	"minecraft:oak_log": 137,
+	"minecraft:orange_wall_banner": 13187,
+	"minecraft:purple_stained_glass": 7108,
+	"minecraft:small_dripleaf": 27906,
+	"minecraft:glowstone": 7016,
+	"minecraft:infested_stone": 7760,
+	"minecraft:short_grass": 2248,
+	"minecraft:black_stained_glass_pane": 11971,
+	"minecraft:cyan_wall_banner": 13219,
+	"minecraft:piston": 2263,
+	"minecraft:birch_sapling": 33,
+	"minecraft:cherry_shelf": 2801,
+	"minecraft:granite": 2,
+	"minecraft:green_banner": 13143,
+	"minecraft:polished_blackstone_wall": 22772,
+	"minecraft:polished_tuff_slab": 23867,
+	"minecraft:brown_carpet": 12908,
+	"minecraft:orange_wool": 2294,
+	"minecraft:sculk": 25170,
+	"minecraft:waxed_weathered_copper_golem_statue": 27480,
+	"minecraft:copper_wall_torch": 7012,
+	"minecraft:oxidized_copper": 25312,
+	"minecraft:red_terracotta": 11458,
+	"minecraft:bamboo_pressure_plate": 6880,
+	"minecraft:purple_concrete_powder": 15056,
+	"minecraft:warped_fence_gate": 21281,
+	"minecraft:waxed_weathered_copper_grate": 27060,
+	"minecraft:crimson_stem": 20963,
+	"minecraft:granite_wall": 17793,
+	"minecraft:magenta_glazed_terracotta": 14974,
+	"minecraft:nether_brick_wall": 18765,
+	"minecraft:netherite_block": 21818,
+	"minecraft:oak_stairs": 3918,
+	"minecraft:packed_mud": 7758,
+	"minecraft:stone_brick_slab": 13441,
+	"minecraft:bamboo_sign": 5640,
+	"minecraft:acacia_trapdoor": 7385,
+	"minecraft:allium": 2326,
+	"minecraft:cherry_button": 10804,
+	"minecraft:magenta_bed": 1966,
+	"minecraft:void_air": 15292,
+	"minecraft:waxed_oxidized_copper_bars": 8245,
+	"minecraft:creeper_head": 11091,
+	"minecraft:dead_fire_coral_wall_fan": 15211,
+	"minecraft:gray_stained_glass": 7105,
+	"minecraft:horn_coral_wall_fan": 15259,
+	"minecraft:pale_moss_block": 29703,
+	"minecraft:potted_acacia_sapling": 10635,
+	"minecraft:spruce_shelf": 3249,
+	"minecraft:stripped_spruce_log": 172,
+	"minecraft:bamboo_block": 169,
+	"minecraft:barrier": 12534,
+	"minecraft:copper_chest": 27096,
+	"minecraft:exposed_cut_copper": 25317,
+	"minecraft:pale_oak_door": 14455,
+	"minecraft:twisting_vines_plant": 21030,
+	"minecraft:weathered_copper_grate": 27052,
+	"minecraft:cave_air": 15293,
+	"minecraft:crimson_button": 21475,
+	"minecraft:warped_stairs": 21397,
+	"minecraft:waxed_weathered_copper_bars": 8213,
+	"minecraft:diamond_ore": 5307,
+	"minecraft:orange_concrete_powder": 15047,
+	"minecraft:orange_glazed_terracotta": 14970,
+	"minecraft:blue_candle": 23291,
+	"minecraft:deepslate_gold_ore": 130,
+	"minecraft:jungle_wall_sign": 5868,
+	"minecraft:pearlescent_froglight": 29589,
+	"minecraft:smoker": 20755,
+	"minecraft:black_wool": 2308,
+	"minecraft:dried_ghast": 15106,
+	"minecraft:light_blue_carpet": 12899,
+	"minecraft:magenta_candle_cake": 23375,
+	"minecraft:mangrove_roots": 164,
+	"minecraft:mangrove_wall_sign": 5892,
+	"minecraft:warped_hyphae": 20952,
+	"minecraft:waxed_copper_chest": 27192,
+	"minecraft:exposed_lightning_rod": 27586,
+	"minecraft:jungle_log": 146,
+	"minecraft:oxidized_cut_copper": 25315,
+	"minecraft:oxidized_cut_copper_stairs": 25338,
+	"minecraft:test_block": 21738,
+	"minecraft:crimson_hyphae": 20969,
+	"minecraft:dead_tube_coral_wall_fan": 15187,
+	"minecraft:magenta_stained_glass_pane": 11555,
+	"minecraft:nether_quartz_ore": 11312,
+	"minecraft:purpur_block": 14712,
+	"minecraft:end_rod": 14640,
+	"minecraft:cut_copper_stairs": 25578,
+	"minecraft:dragon_wall_head": 11148,
+	"minecraft:lime_stained_glass": 7103,
+	"minecraft:mangrove_pressure_plate": 6878,
+	"minecraft:pink_shulker_box": 14910,
+	"minecraft:polished_tuff_stairs": 23881,
+	"minecraft:purpur_stairs": 14727,
+	"minecraft:copper_bars": 8021,
+	"minecraft:dead_tube_coral_block": 15137,
+	"minecraft:green_carpet": 12909,
+	"minecraft:oxidized_copper_bulb": 27078,
+	"minecraft:stripped_pale_oak_log": 190,
+	"minecraft:stripped_warped_hyphae": 20955,
+	"minecraft:warped_roots": 20960,
+	"minecraft:waxed_lightning_rod": 27658,
+	"minecraft:brewing_stand": 9459,
+	"minecraft:jukebox": 6964,
+	"minecraft:jungle_wood": 211,
+	"minecraft:light_gray_wall_banner": 13215,
+	"minecraft:magenta_banner": 12967,
+	"minecraft:weathered_copper_bars": 8085,
+	"minecraft:red_banner": 13159,
+	"minecraft:anvil": 11195,
+	"minecraft:bee_nest": 21768,
+	"minecraft:potted_crimson_roots": 21828,
+	"minecraft:yellow_concrete_powder": 15050,
+	"minecraft:copper_golem_statue": 27288,
+	"minecraft:polished_basalt": 7004,
+	"minecraft:potted_warped_fungus": 21827,
+	"minecraft:waxed_copper_chain": 8279,
+	"minecraft:kelp_plant": 15088,
+	"minecraft:polished_blackstone_stairs": 22668,
+	"minecraft:brown_stained_glass_pane": 11875,
+	"minecraft:red_wall_banner": 13239,
+	"minecraft:warped_planks": 21033,
+	"minecraft:waxed_copper_lantern": 20864,
+	"minecraft:acacia_planks": 19,
+	"minecraft:cobbled_deepslate": 27926,
+	"minecraft:white_candle": 23115,
+	"minecraft:copper_block": 25309,
+	"minecraft:cyan_stained_glass_pane": 11779,
+	"minecraft:orange_banner": 12951,
+	"minecraft:tube_coral_fan": 15177,
+	"minecraft:bookshelf": 2343,
+	"minecraft:light_gray_shulker_box": 14922,
+	"minecraft:potted_oxeye_daisy": 10651,
+	"minecraft:bamboo_hanging_sign": 6660,
+	"minecraft:orange_stained_glass": 7099,
+	"minecraft:sandstone_wall": 19737,
+	"minecraft:water_cauldron": 9461,
+	"minecraft:weeping_vines": 20977,
+	"minecraft:jigsaw": 21736,
+	"minecraft:warped_button": 21499,
+	"minecraft:waxed_exposed_copper_trapdoor": 26870,
+	"minecraft:cave_vines": 27757,
+	"minecraft:cobblestone": 14,
+	"minecraft:dark_oak_sapling": 41,
+	"minecraft:pale_oak_sign": 5576,
+	"minecraft:sculk_shrieker": 25308,
+	"minecraft:chipped_anvil": 11199,
+	"minecraft:dispenser": 567,
+	"minecraft:lectern": 20787,
+	"minecraft:pumpkin": 8332,
+	"minecraft:torch": 3370,
+	"minecraft:cracked_nether_bricks": 23094,
+	"minecraft:acacia_sign": 5448,
+	"minecraft:tuff_bricks": 24275,
+	"minecraft:verdant_froglight": 29586,
+	"minecraft:weathered_copper_lantern": 20856,
+	"minecraft:chiseled_tuff": 24274,
+	"minecraft:polished_blackstone_brick_slab": 22249,
+	"minecraft:dark_oak_trapdoor": 7513,
+	"minecraft:deepslate_diamond_ore": 5308,
+	"minecraft:green_wool": 2306,
+	"minecraft:packed_ice": 12914,
+	"minecraft:pale_oak_log": 158,
+	"minecraft:blackstone_wall": 21915,
+	"minecraft:cherry_wall_hanging_sign": 6708,
+	"minecraft:deepslate_tiles": 28748,
+	"minecraft:iron_block": 2339,
+	"minecraft:oxidized_copper_bars": 8117,
+	"minecraft:shulker_box": 14868,
+	"minecraft:wither_skeleton_wall_skull": 10988,
+	"minecraft:blue_carpet": 12907,
+	"minecraft:bamboo_mosaic": 28,
+	"minecraft:creaking_heart": 3896,
+	"minecraft:infested_deepslate": 29574,
+	"minecraft:lime_glazed_terracotta": 14986,
+	"minecraft:orange_stained_glass_pane": 11523,
+	"minecraft:waxed_exposed_cut_copper": 25677,
+	"minecraft:basalt": 7001,
+	"minecraft:cherry_trapdoor": 7449,
+	"minecraft:potted_wither_rose": 10654,
+	"minecraft:purpur_slab": 13477,
+	"minecraft:dark_oak_fence_gate": 13651,
+	"minecraft:frogspawn": 29591,
+	"minecraft:green_candle": 23323,
+	"minecraft:infested_cracked_stone_bricks": 7764,
+	"minecraft:peony": 12922,
+	"minecraft:petrified_oak_slab": 13423,
+	"minecraft:quartz_bricks": 23095,
+	"minecraft:stone": 1,
+	"minecraft:bamboo_wall_hanging_sign": 6764,
+	"minecraft:coal_block": 12913,
+	"minecraft:soul_lantern": 20844,
+	"minecraft:weathered_copper_golem_statue": 27352,
+	"minecraft:dead_horn_coral_wall_fan": 15219,
+	"minecraft:hay_block": 12894,
+	"minecraft:light_gray_concrete": 15038,
+	"minecraft:open_eyeblossom": 29868,
+	"minecraft:red_wool": 2307,
+	"minecraft:waxed_weathered_cut_copper_slab": 26008,
+	"minecraft:coarse_dirt": 11,
+	"minecraft:cyan_bed": 2078,
+	"minecraft:heavy_core": 29702,
+	"minecraft:pale_oak_wall_hanging_sign": 6732,
+	"minecraft:redstone_torch": 6885,
+	"minecraft:fire_coral_fan": 15183,
+	"minecraft:nether_brick_fence": 9366,
+	"minecraft:purple_concrete": 15040,
+	"minecraft:crimson_pressure_plate": 21047,
+	"minecraft:dried_kelp_block": 15089,
+	"minecraft:green_wall_banner": 13235,
+	"minecraft:lime_candle_cake": 23381,
+	"minecraft:waxed_copper_golem_statue": 27416,
+	"minecraft:cauldron": 9460,
+	"minecraft:chiseled_polished_blackstone": 22245,
+	"minecraft:honeycomb_block": 21817,
+	"minecraft:oxidized_copper_golem_statue": 27384,
+	"minecraft:prismarine_slab": 12877,
+	"minecraft:chorus_flower": 14706,
+	"minecraft:dead_brain_coral_wall_fan": 15195,
+	"minecraft:deepslate_brick_stairs": 29171,
+	"minecraft:purple_candle": 23275,
+	"minecraft:torchflower": 2323,
+	"minecraft:yellow_shulker_box": 14898,
+	"minecraft:dead_fire_coral_block": 15140,
+	"minecraft:orange_bed": 1950,
+	"minecraft:red_stained_glass": 7112,
+	"minecraft:rooted_dirt": 27921,
+	"minecraft:smooth_red_sandstone_stairs": 15387,
+	"minecraft:wet_sponge": 561,
+	"minecraft:light_blue_terracotta": 11447,
+	"minecraft:polished_blackstone_slab": 22740,
+	"minecraft:potted_open_eyeblossom": 29870,
+	"minecraft:crimson_fungus": 20975,
+	"minecraft:polished_deepslate_wall": 28427,
+	"minecraft:acacia_log": 149,
+	"minecraft:birch_fence_gate": 13523,
+	"minecraft:birch_pressure_plate": 6866,
+	"minecraft:cracked_deepslate_bricks": 29571,
+	"minecraft:glass": 562,
+	"minecraft:black_terracotta": 11459,
+	"minecraft:brain_coral_wall_fan": 15235,
+	"minecraft:copper_ore": 25313,
+	"minecraft:dark_oak_hanging_sign": 6340,
+	"minecraft:red_bed": 2158,
+	"minecraft:cactus": 6929,
+	"minecraft:pink_glazed_terracotta": 14990,
+	"minecraft:pitcher_plant": 14810,
+	"minecraft:smooth_sandstone": 13481,
+	"minecraft:fire_coral_block": 15145,
+	"minecraft:gold_ore": 129,
+	"minecraft:pink_stained_glass": 7104,
+	"minecraft:tripwire": 9726,
+	"minecraft:warped_nylium": 20957,
+	"minecraft:brown_bed": 2126,
+	"minecraft:moving_piston": 2309,
+	"minecraft:red_carpet": 12910,
+	"minecraft:smooth_stone": 13480,
+	"minecraft:spruce_planks": 16,
+	"minecraft:white_wool": 2293,
+	"minecraft:yellow_wool": 2297,
+	"minecraft:cobweb": 2247,
+	"minecraft:oxidized_lightning_rod": 27634,
+	"minecraft:pale_oak_button": 10852,
+	"minecraft:polished_diorite": 5,
+	"minecraft:polished_granite_slab": 16419,
+	"minecraft:prismarine_brick_slab": 12883,
+	"minecraft:repeater": 7037,
+	"minecraft:sponge": 560,
+	"minecraft:flowering_azalea": 27812,
+	"minecraft:cherry_door": 14327,
+	"minecraft:cherry_sign": 5480,
+	"minecraft:granite_slab": 16467,
+	"minecraft:polished_blackstone": 22242,
+	"minecraft:waxed_exposed_copper_bulb": 27086,
+	"minecraft:cherry_fence_gate": 13619,
+	"minecraft:closed_eyeblossom": 29869,
+	"minecraft:polished_deepslate": 28337,
+	"minecraft:spawner": 3888,
+	"minecraft:warped_wall_hanging_sign": 6756,
+	"minecraft:weathered_copper_door": 26226,
+	"minecraft:jungle_wall_hanging_sign": 6716,
+	"minecraft:jack_o_lantern": 7023,
+	"minecraft:pale_oak_fence_gate": 13683,
+	"minecraft:smooth_red_sandstone": 13483,
+	"minecraft:stripped_crimson_stem": 20966,
+	"minecraft:brown_stained_glass": 7110,
+	"minecraft:copper_bulb": 27066,
+	"minecraft:pink_petals": 27814,
+	"minecraft:exposed_copper_lantern": 20852,
+	"minecraft:mangrove_wood": 223,
+	"minecraft:pink_banner": 13031,
+	"minecraft:podzol": 13,
+	"minecraft:potted_lily_of_the_valley": 10653,
+	"minecraft:purple_shulker_box": 14934,
+	"minecraft:spruce_button": 10708,
+	"minecraft:wall_torch": 3371,
+	"minecraft:iron_trapdoor": 12582,
+	"minecraft:waxed_oxidized_chiseled_copper": 25323,
+	"minecraft:chiseled_bookshelf": 2407,
+	"minecraft:cyan_concrete": 15039,
+	"minecraft:enchanting_table": 9451,
+	"minecraft:gray_terracotta": 11451,
+	"minecraft:quartz_stairs": 11339,
+	"minecraft:rail": 5728,
+	"minecraft:red_mushroom": 2337,
+	"minecraft:scaffolding": 20737,
+	"minecraft:mangrove_button": 10876,
+	"minecraft:mangrove_stairs": 12303,
+	"minecraft:nether_wart_block": 14846,
+	"minecraft:potted_birch_sapling": 10633,
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+	"minecraft:dark_oak_sign": 5544,
+	"minecraft:netherrack": 6997,
+	"minecraft:oak_sign": 5352,
+	"minecraft:stripped_spruce_wood": 229,
+	"minecraft:waxed_oxidized_copper_golem_statue": 27512,
+	"minecraft:brown_wool": 2305,
+	"minecraft:deepslate": 27924,
+	"minecraft:green_stained_glass_pane": 11907,
+	"minecraft:birch_wood": 208,
+	"minecraft:chorus_plant": 14705,
+	"minecraft:light_blue_wool": 2296,
+	"minecraft:lime_shulker_box": 14904,
+	"minecraft:melon_stem": 8350,
+	"minecraft:polished_blackstone_pressure_plate": 22744,
+	"minecraft:polished_diorite_slab": 16437,
+	"minecraft:prismarine_wall": 16821,
+	"minecraft:tripwire_hook": 9592,
+	"minecraft:blue_shulker_box": 14940,
+	"minecraft:cyan_concrete_powder": 15055,
+	"minecraft:nether_portal": 7017,
+	"minecraft:polished_deepslate_slab": 28421,
+	"minecraft:sea_lantern": 12892,
+	"minecraft:azalea_leaves": 531,
+	"minecraft:black_shulker_box": 14964,
+	"minecraft:oxidized_copper_chain": 8273,
+	"minecraft:potted_fern": 10640,
+	"minecraft:snow": 6919,
+	"minecraft:black_banner": 13175,
+	"minecraft:cut_copper_slab": 25668,
+	"minecraft:purpur_pillar": 14714,
+	"minecraft:bamboo_planks": 27,
+	"minecraft:magenta_concrete": 15032,
+	"minecraft:sand": 118,
+	"minecraft:warped_shelf": 3313,
+	"minecraft:chiseled_copper": 25322,
+	"minecraft:dark_oak_door": 14391,
+	"minecraft:red_nether_brick_slab": 16479,
+	"minecraft:stripped_mangrove_wood": 250,
+	"minecraft:weathered_chiseled_copper": 25320,
+	"minecraft:dark_oak_shelf": 2929,
+	"minecraft:mossy_stone_brick_slab": 16431,
+	"minecraft:spruce_fence": 13803,
+	"minecraft:waxed_copper_block": 25671,
+	"minecraft:bamboo_wall_sign": 5900,
+	"minecraft:gray_candle_cake": 23385,
+	"minecraft:nether_sprouts": 20961,
+	"minecraft:orange_terracotta": 11445,
+	"minecraft:oxidized_chiseled_copper": 25319,
+	"minecraft:stripped_oak_wood": 226,
+	"minecraft:end_portal_frame": 9473,
+	"minecraft:green_glazed_terracotta": 15018,
+	"minecraft:red_concrete_powder": 15060,
+	"minecraft:warped_slab": 21043,
+	"minecraft:oxidized_copper_door": 26162,
+	"minecraft:potted_cornflower": 10652,
+	"minecraft:smooth_stone_slab": 13405,
+	"minecraft:weathered_cut_copper_slab": 25656,
+	"minecraft:dark_oak_slab": 13369,
+	"minecraft:dark_oak_stairs": 12143,
+	"minecraft:nether_gold_ore": 135,
+	"minecraft:birch_hanging_sign": 6084,
+	"minecraft:ladder": 5720,
+	"minecraft:soul_soil": 6999,
+	"minecraft:terracotta": 12912,
+	"minecraft:dragon_egg": 9478,
+	"minecraft:mangrove_shelf": 3057,
+	"minecraft:smooth_sandstone_slab": 16455,
+	"minecraft:stonecutter": 20801,
+	"minecraft:brain_coral_fan": 15179,
+	"minecraft:gray_wall_banner": 13211,
+	"minecraft:mud": 27922,
+	"minecraft:skeleton_skull": 10931,
+	"minecraft:test_instance_block": 21742,
+	"minecraft:waxed_copper_grate": 27056,
+	"minecraft:amethyst_cluster": 23413,
+	"minecraft:cobbled_deepslate_wall": 28016,
+	"minecraft:magenta_shulker_box": 14886,
+	"minecraft:red_sandstone_stairs": 13261,
+	"minecraft:gray_carpet": 12903,
+	"minecraft:white_candle_cake": 23371,
+	"minecraft:end_stone_brick_slab": 16449,
+	"minecraft:polished_andesite": 7,
+	"minecraft:birch_wall_hanging_sign": 6692,
+	"minecraft:blue_concrete": 15041,
+	"minecraft:blue_ice": 15275,
+	"minecraft:attached_melon_stem": 8338,
+	"minecraft:crimson_stairs": 21317,
+	"minecraft:dark_oak_pressure_plate": 6874,
+	"minecraft:light_blue_bed": 1982,
+	"minecraft:smooth_basalt": 29576,
+	"minecraft:mud_brick_slab": 13447,
+	"minecraft:oak_wall_hanging_sign": 6676,
+	"minecraft:structure_block": 21723,
+	"minecraft:waxed_oxidized_copper_chest": 27264,
+	"minecraft:weathered_copper_bulb": 27074,
+	"minecraft:gold_block": 2338,
+	"minecraft:medium_amethyst_bud": 23437,
+	"minecraft:sculk_catalyst": 25300,
+	"minecraft:sweet_berry_bush": 20941,
+	"minecraft:cobbled_deepslate_slab": 28010,
+	"minecraft:dark_oak_wood": 220,
+	"minecraft:orange_candle": 23131,
+	"minecraft:deepslate_brick_slab": 29243,
+	"minecraft:jungle_trapdoor": 7321,
+	"minecraft:lantern": 20840,
+	"minecraft:waxed_weathered_copper_trapdoor": 26998,
+	"minecraft:brown_terracotta": 11456,
+	"minecraft:red_sandstone_slab": 13465,
+	"minecraft:resin_block": 8921,
+	"minecraft:sea_pickle": 15267,
+	"minecraft:short_dry_grass": 2252,
+	"minecraft:acacia_wood": 214,
+	"minecraft:candle_cake": 23369,
+	"minecraft:deepslate_coal_ore": 134,
+	"minecraft:sticky_piston": 2241,
+	"minecraft:exposed_chiseled_copper": 25321,
+	"minecraft:lily_pad": 8920,
+	"minecraft:lime_stained_glass_pane": 11651,
+	"minecraft:spruce_sign": 5384,
+	"minecraft:exposed_copper_chain": 8261,
+	"minecraft:gilded_blackstone": 22656,
+	"minecraft:pink_candle_cake": 23383,
+	"minecraft:polished_blackstone_brick_stairs": 22263,
+	"minecraft:tuff_slab": 23456,
+	"minecraft:yellow_bed": 1998,
+	"minecraft:amethyst_block": 23402,
+	"minecraft:mossy_cobblestone_wall": 10308,
+	"minecraft:brown_wall_banner": 13231,
+	"minecraft:cracked_stone_bricks": 7756,
+	"minecraft:deepslate_tile_stairs": 28760,
+	"minecraft:exposed_copper_golem_statue": 27320,
+	"minecraft:mycelium": 8919,
+	"minecraft:oxidized_copper_chest": 27168,
+	"minecraft:raw_copper_block": 29578,
+	"minecraft:red_glazed_terracotta": 15022,
+	"minecraft:acacia_fence_gate": 13587,
+	"minecraft:copper_grate": 27048,
+	"minecraft:polished_deepslate_stairs": 28349,
+	"minecraft:stripped_birch_log": 175,
+	"minecraft:warped_fence": 21113,
+	"minecraft:waxed_cut_copper_slab": 26020,
+	"minecraft:waxed_cut_copper_stairs": 25930,
+	"minecraft:waxed_oxidized_cut_copper": 25675,
+	"minecraft:calcite": 24687,
+	"minecraft:soul_sand": 6998,
+	"minecraft:acacia_slab": 13357,
+	"minecraft:gray_banner": 13047,
+	"minecraft:blue_bed": 2110,
+	"minecraft:diorite_wall": 20385,
+	"minecraft:gray_stained_glass_pane": 11715,
+	"minecraft:light_blue_concrete": 15033,
+	"minecraft:polished_blackstone_button": 22754,
+	"minecraft:end_stone_brick_stairs": 15707,
+	"minecraft:pale_oak_stairs": 12223,
+	"minecraft:pink_carpet": 12902,
+	"minecraft:pink_terracotta": 11450,
+	"minecraft:weathered_lightning_rod": 27610,
+	"minecraft:jungle_sign": 5512,
+	"minecraft:stripped_acacia_log": 181,
+	"minecraft:crimson_fence": 21081,
+	"minecraft:deepslate_brick_wall": 29249,
+	"minecraft:red_candle": 23339,
+	"minecraft:soul_campfire": 20912,
+	"minecraft:white_tulip": 2330,
+	"minecraft:beacon": 9980,
+	"minecraft:cherry_fence": 13931,
+	"minecraft:emerald_ore": 9573,
+	"minecraft:end_gateway": 14816,
+	"minecraft:exposed_copper_trapdoor": 26614,
+	"minecraft:mangrove_slab": 13381,
+	"minecraft:fire_coral_wall_fan": 15251,
+	"minecraft:red_sand": 123,
+	"minecraft:rose_bush": 12920,
+	"minecraft:shroomlight": 20976,
+	"minecraft:snow_block": 6928,
+	"minecraft:redstone_block": 11311,
+	"minecraft:bamboo_mosaic_stairs": 12463,
+	"minecraft:dead_bubble_coral_block": 15139,
+	"minecraft:dead_bubble_coral_wall_fan": 15203,
+	"minecraft:exposed_copper_door": 26098,
+	"minecraft:spruce_hanging_sign": 6020,
+	"minecraft:waxed_weathered_copper_lantern": 20872,
+	"minecraft:white_glazed_terracotta": 14966,
+	"minecraft:andesite_stairs": 16107,
+	"minecraft:dead_brain_coral_fan": 15169,
+	"minecraft:soul_torch": 7006,
+	"minecraft:brown_glazed_terracotta": 15014,
+	"minecraft:soul_fire": 3887,
+	"minecraft:stripped_bamboo_block": 199,
+	"minecraft:waxed_oxidized_copper_lantern": 20876,
+	"minecraft:acacia_fence": 13899,
+	"minecraft:ancient_debris": 21819,
+	"minecraft:cyan_terracotta": 11453,
+	"minecraft:oxidized_cut_copper_slab": 25650,
+	"minecraft:polished_granite_stairs": 15307,
+	"minecraft:blue_terracotta": 11455,
+	"minecraft:dead_tube_coral": 15147,
+	"minecraft:lodestone": 21830,
+	"minecraft:pale_oak_wood": 23,
+	"minecraft:powered_rail": 2200,
+	"minecraft:wither_skeleton_skull": 10971,
+	"minecraft:comparator": 11264,
+	"minecraft:cut_red_sandstone": 13249,
+	"minecraft:jungle_hanging_sign": 6276,
+	"minecraft:reinforced_deepslate": 29592,
+	"minecraft:stripped_dark_oak_log": 187,
+	"minecraft:weathered_copper_chest": 27144,
+	"minecraft:zombie_wall_head": 11028,
+	"minecraft:black_concrete_powder": 15061,
+	"minecraft:potted_blue_orchid": 10644,
+	"minecraft:zombie_head": 11011,
+	"minecraft:oak_hanging_sign": 5956,
+	"minecraft:pink_wall_banner": 13207,
+	"minecraft:yellow_candle": 23179,
+	"minecraft:cyan_shulker_box": 14928,
+	"minecraft:lime_concrete": 15035,
+	"minecraft:slime_block": 12532,
+	"minecraft:smithing_table": 20800,
+	"minecraft:firefly_bush": 29872,
+	"minecraft:blue_orchid": 2325,
+	"minecraft:crafting_table": 5310,
+	"minecraft:dragon_head": 11131,
+	"minecraft:light_gray_stained_glass_pane": 11747,
+	"minecraft:pale_moss_carpet": 29704,
+	"minecraft:waxed_oxidized_copper_grate": 27062,
+	"minecraft:birch_trapdoor": 7257,
+	"minecraft:brick_slab": 13435,
+	"minecraft:infested_stone_bricks": 7762,
+	"minecraft:light_blue_banner": 12983,
+	"minecraft:seagrass": 2254,
+	"minecraft:crimson_slab": 21037,
+	"minecraft:oak_planks": 15,
+	"minecraft:powder_snow": 24689,
+	"minecraft:repeating_command_block": 14823,
+	"minecraft:spruce_leaves": 307,
+	"minecraft:weathered_copper": 25311,
+	"minecraft:bush": 2251,
+	"minecraft:ice": 6927,
+	"minecraft:light_blue_glazed_terracotta": 14978,
+	"minecraft:light_gray_concrete_powder": 15054,
+	"minecraft:tuff_brick_slab": 24279,
+	"minecraft:big_dripleaf": 27864,
+	"minecraft:birch_door": 14135,
+	"minecraft:deepslate_copper_ore": 25314,
+	"minecraft:hopper": 11313,
+	"minecraft:smooth_sandstone_stairs": 15867,
+	"minecraft:stripped_dark_oak_wood": 244,
+	"minecraft:waxed_cut_copper": 25678,
+	"minecraft:barrel": 20743,
+	"minecraft:cactus_flower": 6945,
+	"minecraft:dead_horn_coral_block": 15141,
+	"minecraft:leaf_litter": 27846,
+	"minecraft:red_tulip": 2328,
+	"minecraft:waxed_exposed_cut_copper_stairs": 25850,
+	"minecraft:bamboo_slab": 13387,
+	"minecraft:white_shulker_box": 14874,
+	"minecraft:cherry_planks": 20,
+	"minecraft:grindstone": 20776,
+	"minecraft:warped_wall_sign": 21715,
+	"minecraft:light_gray_terracotta": 11452,
+	"minecraft:lime_candle": 23195,
+	"minecraft:chiseled_stone_bricks": 7757,
+	"minecraft:crimson_fence_gate": 21249,
+	"minecraft:potted_azure_bluet": 10646,
+	"minecraft:stripped_mangrove_log": 196,
+	"minecraft:waxed_exposed_copper_chain": 8285,
+	"minecraft:blue_banner": 13111,
+	"minecraft:dark_oak_wall_sign": 5876,
+	"minecraft:bedrock": 85,
+	"minecraft:cobblestone_wall": 9984,
+	"minecraft:crimson_sign": 21659,
+	"minecraft:brain_coral_block": 15143,
+	"minecraft:brown_concrete": 15042,
+	"minecraft:cherry_sapling": 39,
+	"minecraft:potted_golden_dandelion": 10642,
+	"minecraft:stripped_cherry_log": 184,
+	"minecraft:white_stained_glass_pane": 11491,
+	"minecraft:calibrated_sculk_sensor": 24787,
+	"minecraft:cherry_wall_sign": 5860,
+	"minecraft:lilac": 12918,
+	"minecraft:pink_candle": 23211,
+	"minecraft:warped_trapdoor": 21193,
+	"minecraft:andesite": 6,
+	"minecraft:black_bed": 2174,
+	"minecraft:blue_stained_glass": 7109,
+	"minecraft:cyan_candle_cake": 23389,
+	"minecraft:pitcher_crop": 14800,
+	"minecraft:potted_jungle_sapling": 10634,
+	"minecraft:weathered_copper_chain": 8267,
+	"minecraft:daylight_detector": 11295,
+	"minecraft:waxed_oxidized_copper_bulb": 27094,
+	"minecraft:magma_block": 14845,
+	"minecraft:sniffer_egg": 15102,
+	"minecraft:stripped_jungle_wood": 235,
+	"minecraft:blackstone_stairs": 21843,
+	"minecraft:blue_wool": 2304,
+	"minecraft:orange_carpet": 12897,
+	"minecraft:stone_button": 6904,
+	"minecraft:stripped_pale_oak_wood": 247,
+	"minecraft:chiseled_nether_bricks": 23093,
+	"minecraft:gray_concrete": 15037,
+	"minecraft:magenta_terracotta": 11446,
+	"minecraft:mangrove_door": 14519,
+	"minecraft:sculk_vein": 25298,
+	"minecraft:spruce_fence_gate": 13491,
+	"minecraft:spruce_stairs": 9739,
+	"minecraft:stripped_crimson_hyphae": 20972,
+	"minecraft:infested_chiseled_stone_bricks": 7765,
+	"minecraft:jungle_leaves": 363,
+	"minecraft:pointed_dripstone": 27740,
+	"minecraft:tuff_brick_wall": 24365,
+	"minecraft:brown_concrete_powder": 15058,
+	"minecraft:chiseled_resin_bricks": 9333,
+	"minecraft:crimson_trapdoor": 21129,
+	"minecraft:flower_pot": 10629,
+	"minecraft:lava": 102,
+	"minecraft:polished_diorite_stairs": 15547,
+	"minecraft:activator_rail": 11421,
+	"minecraft:cyan_carpet": 12905,
+	"minecraft:lime_wool": 2298,
+	"minecraft:player_wall_head": 11068,
+	"minecraft:red_nether_brick_stairs": 16187,
+	"minecraft:birch_shelf": 2737,
+	"minecraft:oak_wall_sign": 5828,
+	"minecraft:orange_candle_cake": 23373,
+	"minecraft:potted_dead_bush": 10657,
+	"minecraft:red_mushroom_block": 7830,
+	"minecraft:stripped_jungle_log": 178,
+	"minecraft:waxed_copper_bulb": 27082,
+	"minecraft:dead_horn_coral": 15155,
+	"minecraft:mangrove_sign": 5608,
+	"minecraft:mossy_cobblestone": 3368,
+	"minecraft:potted_crimson_fungus": 21826,
+	"minecraft:resin_bricks": 8922,
+	"minecraft:weathered_cut_copper_stairs": 25418,
+	"minecraft:yellow_terracotta": 11448,
+	"minecraft:fire_coral": 15163,
+	"minecraft:green_concrete_powder": 15059,
+	"minecraft:orange_concrete": 15031,
+	"minecraft:suspicious_gravel": 125,
+	"minecraft:air": 0,
+	"minecraft:mangrove_propagule": 50,
+	"minecraft:potted_flowering_azalea_bush": 29581,
+	"minecraft:wheat": 5311,
+	"minecraft:blue_glazed_terracotta": 15010,
+	"minecraft:brown_candle_cake": 23395,
+	"minecraft:dark_oak_button": 10828,
+	"minecraft:dripstone_block": 27755,
+	"minecraft:emerald_block": 9727,
+	"minecraft:jungle_pressure_plate": 6868,
+	"minecraft:pale_oak_shelf": 3185,
+	"minecraft:piston_head": 2271,
+	"minecraft:bubble_column": 15294,
+	"minecraft:sandstone_slab": 13411,
+	"minecraft:prismarine_brick_stairs": 12725,
+	"minecraft:stone_pressure_plate": 6796,
+	"minecraft:diorite_stairs": 16347,
+	"minecraft:mangrove_wall_hanging_sign": 6740,
+	"minecraft:waxed_exposed_copper": 25673,
+}
diff --git a/internal/worldgen/structure.go b/internal/worldgen/structure.go
new file mode 100644
index 0000000..b56b1f3
--- /dev/null
+++ b/internal/worldgen/structure.go
@@ -0,0 +1,163 @@
+package worldgen
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"os"
+
+	"regionio/internal/nbt"
+)
+
+type ChunkWriter interface {
+	SetBlock(lx, y, lz int, state uint16)
+	GetBlock(lx, y, lz int) uint16
+}
+
+// Template represents a loaded NBT structure.
+type Template struct {
+	Size    [3]int
+	Blocks  []TemplateBlock
+	Palette []uint16 // mapped to global block IDs
+}
+
+type TemplateBlock struct {
+	Pos   [3]int
+	State uint16
+}
+
+// LoadTemplate reads a vanilla structure NBT file.
+func LoadTemplate(path string) (*Template, error) {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	
+	// NBT files are usually gzipped.
+	var r io.Reader = bytes.NewReader(b)
+	if len(b) >= 2 && b[0] == 0x1f && b[1] == 0x8b {
+		gr, err := gzip.NewReader(r)
+		if err != nil {
+			return nil, err
+		}
+		defer gr.Close()
+		r = gr
+	}
+
+	out, err := io.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+
+	_, root, err := nbt.UnmarshalNamed(out)
+	if err != nil {
+		return nil, err
+	}
+
+	comp, ok := root.(*nbt.Compound)
+	if !ok {
+		return nil, fmt.Errorf("root is not a compound")
+	}
+
+	tmpl := &Template{}
+
+	if tag, ok := comp.Get("size"); ok {
+		if sizeList, ok := tag.(nbt.List); ok && len(sizeList.Elems) == 3 {
+			tmpl.Size[0] = int(sizeList.Elems[0].(nbt.Int))
+			tmpl.Size[1] = int(sizeList.Elems[1].(nbt.Int))
+			tmpl.Size[2] = int(sizeList.Elems[2].(nbt.Int))
+		}
+	}
+
+	// Parse palette
+	if tag, ok := comp.Get("palette"); ok {
+		if paletteList, ok := tag.(nbt.List); ok {
+			for _, v := range paletteList.Elems {
+				stateComp, ok := v.(*nbt.Compound)
+				if !ok {
+					continue
+				}
+				nameTag, _ := stateComp.Get("Name")
+				name := string(nameTag.(nbt.String))
+				props := make(map[string]string)
+				
+				if propTag, ok := stateComp.Get("Properties"); ok {
+					if propComp, ok := propTag.(*nbt.Compound); ok {
+						for _, k := range propComp.Keys() {
+							pval, _ := propComp.Get(k)
+							if str, ok := pval.(nbt.String); ok {
+								props[k] = string(str)
+							}
+						}
+					}
+				}
+				id := surfaceBlockID(name, props)
+				if id == 0 && name != "minecraft:air" {
+					// Fallback to default block ID for the name
+					id = defaultBlockIDs[name]
+				}
+				tmpl.Palette = append(tmpl.Palette, id)
+			}
+		}
+	}
+
+	// Parse blocks
+	if tag, ok := comp.Get("blocks"); ok {
+		if blocksList, ok := tag.(nbt.List); ok {
+			for _, v := range blocksList.Elems {
+				blockComp, ok := v.(*nbt.Compound)
+				if !ok {
+					continue
+				}
+				stateTag, _ := blockComp.Get("state")
+				stateIdx := int(stateTag.(nbt.Int))
+				
+				var pos [3]int
+				if posTag, ok := blockComp.Get("pos"); ok {
+					if posList, ok := posTag.(nbt.List); ok && len(posList.Elems) == 3 {
+						pos[0] = int(posList.Elems[0].(nbt.Int))
+						pos[1] = int(posList.Elems[1].(nbt.Int))
+						pos[2] = int(posList.Elems[2].(nbt.Int))
+					}
+				}
+
+				if stateIdx >= 0 && stateIdx < len(tmpl.Palette) {
+					state := tmpl.Palette[stateIdx]
+					tmpl.Blocks = append(tmpl.Blocks, TemplateBlock{
+						Pos:   pos,
+						State: state,
+					})
+				}
+			}
+		}
+	}
+
+	return tmpl, nil
+}
+
+// Place applies the template blocks to the ChunkWriter if they fall within the given chunk boundaries.
+// cx, cz are the chunk coordinates we are currently generating.
+// originX, originY, originZ is where the [0,0,0] of the template is placed in the world.
+func (t *Template) Place(cw ChunkWriter, cx, cz int32, originX, originY, originZ int) {
+	minX := int(cx) * 16
+	minZ := int(cz) * 16
+	maxX := minX + 15
+	maxZ := minZ + 15
+
+	for _, b := range t.Blocks {
+		wx := originX + b.Pos[0]
+		wy := originY + b.Pos[1]
+		wz := originZ + b.Pos[2]
+
+		if wx >= minX && wx <= maxX && wz >= minZ && wz <= maxZ {
+			lx := wx - minX
+			lz := wz - minZ
+			// Only place if not air, or if you want structures to hollow out space, place air too.
+			// Jigsaw structures use structure_void to mean "don't overwrite", and air to mean "overwrite with air".
+			// Since we fallback to 0 for unknown blocks, we need to be careful.
+			// For now, place everything.
+			cw.SetBlock(lx, wy, lz, b.State)
+		}
+	}
+}
diff --git a/internal/worldgen/structure_manager.go b/internal/worldgen/structure_manager.go
new file mode 100644
index 0000000..63cdc39
--- /dev/null
+++ b/internal/worldgen/structure_manager.go
@@ -0,0 +1,32 @@
+package worldgen
+
+// PlaceStructures places any structure pieces that overlap the chunk at (cx, cz).
+func PlaceStructures(cw ChunkWriter, od *OverworldDensity, cx, cz int32, seed int64, surfTop *[16][16]int, biomeName *[16][16]string) {
+	const spacing = 32 // chunk grid spacing for villages
+	const radius = 2   // max chunk radius a village spans
+
+	for dx := -radius; dx <= radius; dx++ {
+		for dz := -radius; dz <= radius; dz++ {
+			originCx := int(cx) + dx
+			originCz := int(cz) + dz
+
+			// Village every 32x32 chunks
+			if originCx%spacing == 0 && originCz%spacing == 0 {
+				t := GetTemplate("plains_small_house_1")
+				if t != nil {
+					baseY := -64 // MinY
+					if dx == 0 && dz == 0 {
+						baseY += surfTop[8][8] + 1
+					} else {
+						// sample height at center of origin chunk
+						_ = SampleColumn2D(od, 63, originCx*16+8, originCz*16+8)
+						// We don't have a fast exact heightmap lookup without running the column,
+						// but this is acceptable for a quick prototype.
+						baseY = 70 
+					}
+					t.Place(cw, cx, cz, originCx*16+8, baseY, originCz*16+8)
+				}
+			}
+		}
+	}
+}
diff --git a/internal/worldgen/template_cache.go b/internal/worldgen/template_cache.go
new file mode 100644
index 0000000..2b8a662
--- /dev/null
+++ b/internal/worldgen/template_cache.go
@@ -0,0 +1,18 @@
+package worldgen
+
+import "sync"
+
+var (
+	templates     = make(map[string]*Template)
+	templatesOnce sync.Once
+)
+
+// GetTemplate loads and caches an NBT template from disk.
+func GetTemplate(name string) *Template {
+	templatesOnce.Do(func() {
+		// Preload some known templates on first use
+		t1, _ := LoadTemplate("internal/worldgen/data/structure/village/plains/houses/plains_small_house_1.nbt")
+		templates["plains_small_house_1"] = t1
+	})
+	return templates[name]
+}
diff --git a/scratch.go b/scratch.go
index bdfa45a..d5e2980 100644
--- a/scratch.go
+++ b/scratch.go
@@ -1,17 +1,13 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
-	"os"
+	"regionio/internal/worldgen"
 )
 
 func main() {
-	f, _ := os.Open("generated/reports/blocks.json")
-	var data map[string]interface{}
-	json.NewDecoder(f).Decode(&data)
-
-	glowstone := data["minecraft:glowstone"]
-	b, _ := json.MarshalIndent(glowstone, "", "  ")
-	fmt.Println("glowstone:", string(b))
+	tmpl, _ := worldgen.LoadTemplate("internal/worldgen/data/structure/village/plains/houses/plains_small_house_1.nbt")
+	for i, b := range tmpl.Palette {
+		fmt.Printf("Palette[%d] = %d\n", i, b)
+	}
 }