I've started off with this:
So much on so little:
I'm using more than 12 wad files, the sidewalks are 32 units wide and all textures have been scaled down to .25. I'm also planning to have both an urban and rural area for this city(both a business and residential area) I've yet to add traffic lights, fire hydrants, finish the parking garage, and a crapload of other things before I start on more buildings. Bring on the opposing cities, bitches. Skyscrapers for the WIN.