I Say There Monstrosity....

Who can identify this monstrosity? Give up. I'll give you a clue. It lives in Chicago.
Anyone? Well I can admit that it might be difficult from this angle, (which is from the north). Let's try another shot.

Here you see a bit of the original arcitecture before the accident. Any takers? This is taken facing east. Okay. Obviously it is a building of some distinction. How about one more passing shot, this is from the south.

Give up? Anyone out there watch football (the real kind, with pads and helmets). One more clue - This is the building directly north of the monstrosity, taken from the side, but there was a lot of traffic. Obviously again, a building of some distinction.
So who can name the monstrosity?