Sun Warriors' ancient city

A sprawling, ancient city that was thought to be extinct. Aang and Zuko discover that the civilization still exists on a tiny island in the Fire Nation. Much of this stone metropolis is now covered in vines and sits unused. This is because the tribe is much smaller than it used to be. Some of the architecture of this ancient city is mirrored in today's Fire Nation architecture, including the Fire Sages' temples.