This is an old image, and one that I wished had been sharp to begin with. I used the unsharp mask and got the stonework sharper, but it was very obvious that it was unsharp mask. So i decided to just jack the levels and see what happened. I kind of like this thing - abstract with cutting lines and starkness. I'm not sure I even like it, but I get this urge to just do this sort of thing once in a while.
Oh - it's a fire escape. I leaned flat against the rough stonework wall and shot straight up.