Animation Background

I recently finished this background for an animation I'm making.  I'm still working on the random items for the roof of the middle building.  Right now, the pipes look kind of out of place, so I will probably either delete them completely or delete them and put something else in their place.  It was also kind of hard to think of different architecture styles for the three different buildings as well as the buildings in the backdrop.

Link:
http://megaswf.com/simple_serve/99046/