Interesting effect, did you use the "Painterly" preset on Photomatix perhaps?
Also, did you use multiple exposures for this or a single RAW file and generate multiple exposures from that? Reason I ask is it looks like there is a man in the centre of the frame who would normally be ghosted out if you used multiple exposures.
Good attempt but I think it's a bit TOO much even for my HDR-loving tastes! The sky for one looks unrealistic and although it's brought out detail in the shadows quite well it looks a bit more like a computer game backdrop than a photo for my tastes.
Nice viewpoint though
