The capital city of Istus built into a minor crater, the city is centered on the towering halls of the Tyrant's palace. The minor towers surrounding run by the various organised crime bosses constantly fighting for control of the stellate mining and refining stages to earn The Tyrant's favour. 

The city map is one of my best (in my opinion), large and crowded, detailed but not overly so, personally I am very proud. Please say mean things about it to check my arrogance.