Temple

From DwarfFortressWiki

A temple is a structure devoted to the worship of a Deity. They are located in Human towns and Goblin fortresses. Human temples are decorated with engravings depicting events in the history of the particular temple's priesthood and Goblin temples are decorated with engravings depicting the history of their goblin civilization.

Occasionally you will find a human temple with a large pool of magma at the bottom.