Oliver - Congrats on an extremely well deserved top 5. A wonderful study in diagonal and parallel lines. The tone of the image is so cool and blue - very good stuff all around.
Although definitely abstract, and certianly shot extremely well on a technical level, there's a kind of generic feel about this shot that keeps me from giving this a higher score. There's also something about the lines that fight each other, rather than work together. I think, "I like this." but then I find I immediately follow it with, "but not that much."
This abstraction of lines, rectangles, and shadows stands out in part because so many of the intersections happen at slightly unsettling angles -- perhaps echoing mild wide angle lens distortion -- contributing a visual interest factor that takes a while to identify.
You win! ;) The tones are exceptional and so is the clarity. Nice and abstract. Not as creative out of the box as some entries but I sure wish this where mine hehe. *hinting this might be Eyewave's* (no vote)