Very nice shot indeed. Have seen some similar type shots printed onto canvas in Camden, London. I think it works well becuase it's given you many subjects in the frame as opposed to just one building.
What my eyes look at first is actually the negative space created by the buildings themselves. That space reminds me of the outline of an airplane...then with the tall buildings my mind jumps to 9-11. I like the photo, that's just what it makes me think of.
The fish eye really works with this shot, because althought he sides are a fleshed out... all the lines are directed upwards... and because of the roundness of the sides you are kind of forced to look up... too bad there weren't some clouds in the sky to look at.