City By The Sea
I used my reference pretty heavily on this one.
This city is on the equator, so the planet's rings appear as a thin line perpendicular to the equator. ... Yeah, I'm a nerd, I figured all this out... shut up.
The City by the Sea is the least regulated of the five cities, the buildings are the smallest and most numerous. This is the closest thing this planet has to urban sprawl. Culturally the people are very laid back and easygoing. Because of the overall lax attitude, there is a lot of contact and illegal trade with the deserters and wilderness men here.