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Generated structures

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This page lists generated structures in Minecraft. A generated structure is defined as any structure that is disabled when the "Generate structures" world creation option is turned off. Some structures, such as dungeons and desert wells, do still generate with this option turned off; however, they are listed on this page due to them having the appearance of an artificial structure as opposed to a natural formation.

Overworld[edit]

The Overworld contains numerous generated structures, at a wide variety of scales.

Underground structures[edit]

Structure Biome(s) Description Rarity
Mineshaft Any A maze of corridors supported by wooden beams, with incomplete rail systems on which minecarts with chests can generate. Cave spider spawners may generate here heavily surrounded by cobwebs. In Badlands biomes, they use dark oak planks instead of oak planks, and may generate close to the surface. Common
Stronghold Any Maze-like stone brick structures containing many rooms, including one with a usually unactivated end portal frame. They have a specific, fixed way of generating, and a maximum of 128 can generate in a single world.‌[Java Edition only] Rare

Small structures[edit]

Structure Biome(s) Description Rarity
Fossil Usually buried structures made of bone blocks and some coal ore. Very rare
Buried Treasure A single hidden chest containing valuable loot. They are easily found using treasure maps located in shipwrecks and occasionally ocean ruins. Uncommon
Ruined Portal Any An incomplete nether portal constructed with various types of stone or blackstone materials when generating in the Overworld or Nether respectively. They can generate in varying sizes and positions. A netherrack platform underneath, as well as a loot chest, always generates. Common

Underwater structures[edit]

Structure Biome(s) Description Rarity
Ocean Ruins A collection of small structures made of stone bricks or sandstone. Drowned may spawn naturally here. Common
Shipwreck Wooden structures resembling sunken ships in varying states of deterioration. They contain up to three loot chests, and may generate in underwater ravines‌[Bedrock Edition only]. Common
Ocean Monument Massive prismarine temples inhabited by guardians, as well as three elder guardians in fixed positions. Wet sponges, along with eight blocks of gold as treasure, also generate naturally here. The interior structure is randomly generated, resembling a maze of sorts. Rare

Buildings[edit]

Buildings are usually semi-large structures that generate above ground. They can contain valuable treasure but may contain traps, puzzles, and hidden areas as well.

Structure Biome(s) Description Rarity
Desert Pyramid Large sandstone buildings containing four loot chests in an underground room hidden beneath terracotta. The chests are trapped with TNT which detonate when the stone pressure plate in the center is stepped on, destroying the chests and their contents. Uncommon
Igloo Snow buildings that may have a basement hidden under carpet. The igloo itself contains nothing much of interest, but the basement has a villager and a zombie villager held captive behind iron bar. The splash potion of weakness on the brewing stand, together with the golden apple in the loot chest, can be used to cure the zombie villager. Rare
Jungle Pyramid Overgrown cobblestone structures containing two loot chests, with one trapped with two dispensers firing arrows and the other hidden behind a lever puzzle. Setting the correct combination for the lever puzzle moves a block on the main floor, revealing a hidden cavity and the chest. Rare
Pillager Outpost An assortment of structures spawning pillagers. The main feature of interest is the watchtower: a tall structure built with wood and cobblestone that generates a loot chest on the top floor. Located around the watchtower are up to four small structures, including tents, target scarecrows, and wooden cages sometimes containing an iron golem. Rare
Swamp Hut Also known as witch huts, these are small wooden buildings on log stilts containing a cauldron and crafting table. It spawns witches and, upon generation, one black cat. The cat and the first witch do not despawn naturally. Rare
Village A collection of houses and job sites inhabited by villagers of random professions and one iron golem. They are constructed with a wide variety of materials, depending on the biome that they generate in. Although village buildings do not have variants for Jungle and Swamp biomes, villagers wear different outfits when spawning in said biomes. Common
Woodland Mansion Massive, systematically-generated buildings constructed with dark oak wood and a cobblestone foundation. They contain many rooms (some hidden) and loot chests in their three floors, and are inhabited by vindicators and evokers that do not naturally despawn. Very rare

Miscellaneous structures[edit]

These structures generate even when the "Generate structures" world option is disabled, and also cannot be located with the /locate command.

Structure Biome(s) Description Rarity
Dungeon Any A small cobblestone room containing a spawner, which creates zombies, skeletons, or spiders, as well as up to two loot chests. They are typically connected to underground caves but may generate above ground or intersected with other structures. Uncommon
Desert well Small sandstone structures holding water in their center cavity. Rare

The Nether[edit]

The Nether, though equally vast, contains far fewer generated structures than the Overworld.

Structure Biome(s) Description Rarity
Nether Fortress Any Towering nether brick castles that exclusively contain blaze spawners and nether wart farms. They are divided into open-air ramparts and winding interior corridors, some of which contain loot chests. Uncommon
Bastion Remnant Enormous, fortress-like blackstone structures housing piglins and piglin brutes. They can generate in various forms (bridges, housing units, hoglin stables and treasure rooms) and chest spoils vary from one form to the next. Common
Nether Fossil Fossil variants that are more incomplete and purely composed of bone blocks. Common
Ruined Portal Any An incomplete nether portal constructed with various types of stone or blackstone materials when generating in the Overworld or Nether respectively. They can generate in varying sizes and positions. A netherrack platform underneath, as well as a loot chest, always generates. Common

The End[edit]

The End is the final and most barren dimension, with no generated structures on its main island. After defeating the ender dragon, gateways to the outer islands are created.

Structure Biome(s) Description Rarity
End City Sprawling, well-connected towers built from purpur and end stone. They are inhabited by shulkers that guard valuable loot chests, and the largest, most meandering cities may generate an end ship holding a pair of elytra. Uncommon

Technical details[edit]

Structures are generated for a given chunk after the terrain has been formed. The chunk format includes a tag called TerrainPopulated that indicates whether structures whose point of origin is in that chunk have been generated. If it is false or missing, it generates again. Structure generation is based on what is already in the chunk, so (for example) flagging a chunk that has already been populated for repopulation approximately doubles the amount of ore in it. When structures are generated, they can spill over into neighboring chunks that have been previously generated.

History[edit]

Java Edition Infdev
20100625-2Added dungeons.
Java Edition Beta
1.8Pre-releaseAdded mineshafts.
Added villages.
Added strongholds.
Java Edition
1.0.0Beta 1.9 PrereleaseAdded Nether fortresses.
1.2.112w04aAdded desert wells.
1.3.112w21aAdded desert pyramids.
12w22aAdded jungle pyramids.
1.4.212w40aAdded swamp huts.
1.814w25aAdded ocean monuments.
1.8.1pre1Swamp huts can now spawn witches at levels 64 to 71, enabling three spawning floors for witches.
1.915w31aAdded End cities.
15w43aAdded igloos.
1.1016w20aAdded fossils.
16w21aBlacksmith job sites in villages now generate with cobblestone in all biomes, rather than acacia logs in savannas and sandstone in deserts.
pre1Zombie villagers generated in zombie villages no longer despawn.
Wooden fences are now substituted with the biome’s corresponding wood type.
Paths no longer replace most blocks, preventing them from generating in treetops or bridging ravines.
1.1116w39aAdded woodland mansions.
Added the /locate command that shows the coordinates of the nearest structures.
1.1317w43aStructures using structure files can now be modified, with the addition of data packs.
17w47aFlower pots in swamp huts now contain mushrooms; they were previously empty.
18w09aAdded ocean ruins.
18w10aAdded buried treasure chests.
18w11aAdded shipwrecks.
1.1418w47aAdded pillager outposts.
18w48aOverhauled villages.
1.1620w06aAdded nether fossils.
20w16aAdded bastion remnants and ruined portals.
Pocket Edition Alpha
0.9.0build 1Added villages, abandoned mineshafts, strongholds, dungeons and desert wells.
0.10.0build 1Abandoned mineshafts now generate on ground level in Badlands biomes.
0.11.0build 1Added desert wells.
0.12.1build 1Added the Nether along with Nether fortresses.
0.13.0build 1Added desert pyramids.
0.14.0build 1Added swamp huts.
Cauldrons in swamp huts are filled with a random potion.
0.15.0build 1Added jungle temples.
Added savanna and taiga village variants.
Villages can now generate in cold taiga and ice plains biomes, where village buildings are constructed with spruce wood like in taiga villages.
Villages have a slim chance to generate as abandoned villages, which spawn zombified villagers. Cobwebs and moss stone replace some blocks in the buildings of such villages.
0.16.0build 1Added ocean monuments.
Pocket Edition
1.0.0alpha 0.17.0.1Added the End and along with End cities.
Added igloos.
1.1.0alpha 1.1.0.0Added woodland mansions.
1.1.3alpha 1.1.3.0Added fossils.
Bedrock Edition
1.4.0beta 1.2.14.2Added shipwrecks.
Added buried treasure chests.
beta 1.2.20.1Added ocean ruins.
1.10.0beta 1.10.0.3Added pillager outposts.
Overhauled villages.
1.16.0beta 1.16.0.57Added Nether fossils, bastion remnants and ruined portals.
Legacy Console Edition
TU5CU11.0Patch 11.0.1Added villages, abandoned mineshafts, and strongholds.
TU12Added desert wells.
TU141.04Added jungle and desert pyramids.
TU19CU71.12Added swamp huts.
TU31CU191.22Patch 3Added ocean monuments.
TU43CU331.36Patch 13Added fossils and igloos.
TU54CU441.52Patch 241.0.4Added woodland mansions.
TU691.76Patch 38Added shipwrecks, ocean ruins, icebergs, and buried treasure chests.

See also[edit]