A promising scene, but the composition and lighting could be better. If you'll have an opportunity to reshoot this, I would recommend to point the camera more to the left. That would
1) move the angel off-centre, 2) get rid of the rightmost part, which, I agree with Mark, doesn't add much to the picture 3) lose the highlights in the top right area.
I'd like to stress the third point. Those highlights are quite strong, creating an area that is in high contrast to the rest of the photo, thus drawing the viewer's attention away from the important part of the scene - the angel and the people on the left. Which brings me to my final point - expose for the left side of the pic, which is currently underexposed.
If you can't reshoot, I'd recommend a more-or-less square crop, doing away with the right part of the pic, and then lightening the photo up.
I think it needs some cropping, especially the right 1/5th because I like the lines of the main building as it disappears into the narrow street. If you crop out the right 1/5th, it gets more emphasis.