This is one of my favorite architectural shots, I have a 16x24" (40x60cm) print hanging on my wall.
In my view, the shadows are an integral part of the success of this abstract composition.

This building complex, designed by the famous architect Louis Kahn, is considered to be a milestone in the history of Architecture. Before I'd seen it in real life, I couldn't understand why. From photos, I thought it was a cold and inhumane structure, so the impact on me when I experienced it in real life was a great surprise! I was especially surprised by the concrete walls having almost the same qualities of warmth and elegance as that of the travertine "floor".