I have recently come across a new company that produces gaming mats. Corsec Engineering you can visit them by clicking here

Any visual aide that you use will help you to do this. If you can place a building down that is in the scene you are playing then the need to describe it is no longer necessary. It also allows everyone to have the same visual image. I cannot stress enough how important this is. Players will be much more involved in a visually beautiful game than they will with piece of graph paper.