Even when it is an overcast day it seems as if these tinted office windows reflect blue skies. I took this photo as I thought the pattern of the small windows was a little different to most offices. It really needs a window cleaner or an outline of a person stood in one of the windows to give you a sense of scale. I was going to straighten up the lines, due to the distortion of the lens it looks as though the top line is curved. This is more noticeable on wider angle photographs like the above.