Metro Moscow?

So, here are my first 3D renders. I had some software issues on my home computer, so I couldn't dedicate as much time as I would have liked, but I think I'm getting a feel for the program.

I used an oldschool panorama photograph of Moscow to build my skysphere and placed a modern looking structure in the middle of it using two cylinders with a couple of extrusions. I think I still have a bit to learn as far as texturing goes because I wanted to give the building a more gritty or at least something like concrete. I tried bump mapping, but I guess I did not understand it as well as I would have liked. I mostly played around with settings and settled on this transparent texture (perhaps to evoke a dark glass?). I also tried playing around with lights, but only really added a sun near the top of the interior of the sphere.