I think the concrete block is used some how for show, as it is built in the architectures to look nice, because its not really on the other side! Thats the only reason i can think of
It's not HDR, because i have no idea how to HDR. Every time i try HDR i get these crazy halo's and i tried and tried and given up. I experiment with photoshop.
In that image there is a combination of dogding and burning sharpening, playing aound with shadows and highlights, well it took me quite some time to do it!
ok maybe i shouldn't have placed the watermark there