I like the transition from light to dark (or dark to light) in the upper part. The grain shows well here and I like how the intensity changes as black becomes white and vice-versa. I think this is balanced by a more abrupt transition at the bottom where black becomes white in a far more definite way. This is my favourite part. The vertical and horizontal lines give a nice feel of uniformity of structure and I think this works well against the slightly fuzzier reflection. I see this more as an abstract than an architectural study, the title maybe a little misleading, perhaps an explanation can be offered? I like the picture, it's something I probably would have taken in the same way. I'm sure it looks much nicer on the print than on my screen.