Now this is one of the best abstract/minimalistic photographs I've seen in the past few weeks. The composition is exciting due to the vanishing point being almost at the edge of the photograph, the dirt on the white tiles gives more dimension and texture and there's a general sense of 'flow' going on here. Somehow the lines just all add up. Some people might find the handrail in the background distracting; but I don't. I think it's an interesting element, since there are other horizontal lines as well. Great work!