Great job at seeing beauty in an unlikely spot (what im fairly sure is a parking structure). The sky, clouds, and time of day all seem to work perfectly for this shot. I'd provide any constructive critism if I thought there was any to give, but for this concept I think you nailed it perfectly! Well done.
Nice...I tried to do a shot like this when I first got into photography, didn't have a wide enough lens...and still don't. As someone above me mentioned, I like how the pillars offset the symmetry, yet the most obvious thing about the image is the symmetery of the circles.