City Map NEED HELP!

Hey guys, im going to make a map terrain and i need a large city map. I dont want to give away to many ideas but is there anything i would need or should have? Its gonna be a modern city. THANKS IN ADVANCE!

if youre going to amke a modern city, lots of lights, flick through all the buff and ability modles and see what looks good (preferably silver and glowy)

I agree. Lighting is very important. Along with lighting, you need lots and lots of prop doodads. If it's as modern as I think, then the buildings should be fairly tall and large, with great variation as well.

If it will be fairly large, then make each section of the town unique. Add lots of back alleys and some large monuments.

How i did it for my city is make the general tile you want your city roads to be then take Dirt or something and put that tile in the area you want your city blocks to be so you can get a basic idea where the player will beable to walk. then place your buildings the best you can to match simlar to the outline.