So I made a city for my D&D game, Forgotten Realms but the city is fairly new. It's perfectly circular because it was designed by an entity from Mechanus. It's called Fortaan the Clockwork City. The problem I'm having is that CC3+, which I own, doesn't do well with circular city walls. The city has an outer wall, an inner wall, then is divided in to three pie silces with a keep in the middle. It has three tiers, rising up from the ground, to a middle area, to a higher tier. Three districts on each of the three levels. Of course the rule of 3 is the pattern here. What program would you guys recommend for making a map of the city?