Geometry and shapes. Not exposed brilliantly; too much grey and not enough black and I'm too lazy to level it out. I like the way the gutters on the roof lead the eye down to the bottom of the image; sort of a visual slide, and the cheeky arch window defying the harsh, angular lines elsewhere, which is where the image is focused. I think a wider aperture and higher shutter speed would have made this better; the foreground is too blurry. And corrugated iron again.