Stormy clouds over calm waters
I really like how you can see the bottom of the lake in this one. As this is a night shot, I haven't seen it when I took the shot, so I was quite surprised, when I opened it on my PC.
Photo taken at the Strkovec Lake in Bratislava.
HDR from three shots, taken with Canon 450D with Sigma 10-20mm lens, from a tripod.