I really like the setup of this shot. Wonderful setup. Just a thought, I might be tempted to crop off the top a bit, just so there is no light up there. I realize you were going for the architecture of the building, but this might have more a visual impact. Your mileage may vary though. But beyond my unrequested two cents, I really do like this picture. A very well done shot and I can't stress enough how good the lighting and setup are. Superb.
Fantastic in b/w - personally I might have gone for more of a crop at the top, so the white sky parts up there aren't competing for attention with the doorway whites.
This is so elegant. I love the sunlight leading up the stairs. I might like the image even better if it was symmetrical, but that might have messed up the angle of the sunlight.