Freakin' amazing, it's unreal how great it looks. If this was colored in a pleasing fashion I would put it on my wall and I don't say that too lightly, this isn't just great city art, it's just charming in so many small ways. Really well done.

Though I don't personally think the seamless double perspective transition would be hard. I guess I'll have to prove it eventually, but I used to do panelless comic pages which had transitions into tons of different perspectives, so I imagine the concept will be similar. By hand it would suck but digitally, you have the ability to layer and clean up the transition if you don't nail it on the first go, and also, you could do the two separate maps on two different files and then bring them together and just draw the transition.