From Gazetteer:
The shining Imperial City, from which the Empire is administered, sits upon the southern tip of the Maçist peninsula near the center of the Midian Sea. The metropolis, (excepting the outlanders' quarter) is hedged within a wide 30' wall of saffron arenite with towers set every 100'. The old city consists of the Citadel, Hexidrome, high quarter, Imperial Academy, Sparnian Assembly, and the military and merchant harbors. The new city, north and west of the harbors, includes the commercial and artisans districts, temple plaza, arena, thieves' quarter, and numerous open bazaars.
There are several districts in this metropolis.