Very, very nice. Just a couple of things I noticed.
http://img378.imageshack.us/img378/2...rdm00001hd.jpg
In this screeny in one of the jail thingies you can see a little bit of the skybox.
http://img378.imageshack.us/img378/8...rdm00017uw.jpg
and while most of the ceilings and walls etc look like concing will be alright on them (as long as you know how to conc properly) but these two corridors in particular look like they will be an absolute bitch to conc round/through as the low hanging lights are pretty much where you're going to want to conc and not just blocking you if you mess up your conc.