Lighthouse

Lighthouses are large, circular buildings that spawn very rarely in the overworld. Additionally, they will only ever appear near or in an ocean or other large body of water. This makes finding them particularly difficult. If you are lucky enough to discover one nearby, it can be used to harvest quartz blocks and glowstone, which are otherwise unavailable prior to visiting the Nether. Additionally, they can be used as a quick premade house for a player who is fortunate enough to spawn in a new world near to one.