Minauros (city)

Minauros, also called the Sinking City was the capital of the 3 layer of Hell, named after the city itself. Minauros was the world-sized metropolis of the archdevil Mammon and received its "Sinking" epithet from the fact that the entire settlement was inexorably slipping deeper and deeper into the extraplanar bog that was the layer.

Description
Covered in vines and sluge, the Sinking City was, like many cities in the 3 Hell, composed of ornately carved stone and constructed in the cyclopean architectural style. Despite its seemingly impossible vastness, the city did not take up the entire layer, but was still large enough to rival several continents worth of land.