TTW - Willow Steam Plant

Taken thru a hotel window (not the cleanest, either) in Philadelphia.... While playing with the zoom on my camera I saw this interesting building in the distance. It turns out to be an abandoned steam plant at 9th Street & Willow Street. I'm still trying to learn how to get "clean" shots at long focal lengths with this camera and I really should have used a tripod for this. Also lots of distance compression due to the long zoom. The zoom for this photo is the equivalent of about 440mm