A skylight in the ceiling at Stansted Airport, taken on the floor, trying to look directly up at it. Didn't get it quite right and had to do some perspective correction (not sure I got that right, but anyway, it was fun trying).
Good symmetry. It almost makes me dizzy looking at it...or maybe it was that big night last night. Interestng diagonal shadows on the horizontal/vertical framework.
Could not tell from first sight if that was the ceiling or a window or just a tile... hehe.
Perspective lookes ok... but the barrel distortion of the lens is apparent in the straight lines in the right & left. I get this a lot with the 18-55.
It's a very nice abstract thought and I quite like it :)