HDR Pictures have quite the name of being very special and usually unrealistic.
This photograph however gives a better impression about the possibilities of HDR and it's real intentions. Not the very unrealistic results, but the increased range of light is what really matters and what is displayed here, with a great insight look in the folklore of a german city.
The sharpness and colouring of this photograph is what make this HDR-Photograph really great. The historical buildings that are also well-lit hold a great relation with the foreground and result in a great composition at a very unlikely time. Very interesting and enjoyable to watch!
I'm not normally a big fan of HDR. But as the critique above points out, this doesn't add crazy exaggerated drama, just enhances the natural colours/lighting and makes it possible to get the capture. Nice work.