Nice work on the map. Your use of textures is lovely. The one thing that's a little off is the shadows. You've used a drop shadow filter with an offset - which does a great job in most places, but you'll see that the edges of the shadows aren't quite right. It looks like the buildings are floating rather than being connected to the ground, because the shadows don't connect directly to the corners. It's most obvious around the edges of the square and rectangular buildings. The shadows should be cast straight out from the edges of the building, but this isn't happening here.

Hope that helps, because the rest of the map is really great.