I am only slowly warming up to HDR .. this is about a few shades too fake looking. You have the Halo around the tower ... and the colors are .. too much.
Again this is from a guy that is a little uneasy about the whole HDR thing - so take with a grain of salt
I am just an HDR skeptic at this point. I need to take one of my own and see the process and the options so I can have a more qualified opinion
The composition and light is perfect, however, and there are a lot of things HDR fixed from the original shot. I especially love how the angle of the sunbeams aligns itself with the "beading" on the tower - fantastic.