Structure

This page lists structures (also known as generated structures or structure features) in Minecraft. A structure is defined as what is disabled when the "Generate structures" world creation option is turned off. Features, such as monster room and desert wells, do still generate with this option turned off; however, they are listed on this page in § Structure-like features due to them having the appearance of an artificial structure as opposed to a natural formation.

## Overworld

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

### Underground structures

These structures can only generate underground in vanilla default Overworlds.

### Aboveground structures

These structures only generate aboveground.

### Aboveground and underground structures

These structures generate both aboveground and underground.

### Underwater structures

Note that ocean ruins and shipwrecks sometimes generate above water on shores, and icebergs are partially above and below water.

 Pirate Ship
* Deep Frozen Ocean
* Deep Cold Ocean
* Deep Lukewarm Ocean
* Ocean
* Frozen Ocean
* Cold Ocean
* Warm Ocean
* Lukewarm Ocean
* Deep Warm Ocean‌
 Ocean Ruins
* Deep Frozen Ocean
* Deep Cold Ocean
* Deep Lukewarm Ocean
* Ocean
* Frozen Ocean
* Cold Ocean
* Warm Ocean
* Lukewarm Ocean
* Deep Warm Ocean‌
 Shipwreck
* Deep Frozen Ocean
* Deep Cold Ocean
* Deep Lukewarm Ocean
* Ocean
* Frozen Ocean
* Cold Ocean
* Warm Ocean
* Lukewarm Ocean
* Beach
* Snowy Beach
* Mushroom Field Shore
 Ocean Monument
* Deep Frozen Ocean
* Deep Cold Ocean
* Deep Lukewarm Ocean
* Deep Warm Ocean‌
 Sunken Palace
* Deep Frozen Ocean
* Deep Cold Ocean
* Deep Lukewarm Ocean
* Deep Warm Ocean‌

## The Nether

Main article: The Nether

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

* Crimson Forest
* Warped Forest
* Soul Sand Valley
 Nether Fortress
 Nether Fossil
 Ruined Portal
 Skull Catacombs

## The Aether

The Aether has few generated structures.

 City in the Sky

## The End

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.

* End Highlands‌
 Palace of Dusk

## Structure-like features

These worldgen features have similarities to structures but they are not true structures. Instead, they are coded and generated the same way as trees or ores. This is why they generate even when the "Generate structures" world option is disabled, and also cannot be located with the `/locate` command.

 Desert well
 Forest rock
* Old Growth Pine Taiga
 Geode
 Fossil
* Swamp
 Iceberg

## Technical details

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.