Mauthausen, Austria is a small town on the Danube that likes to keep up medieval appearances. It shares a name with the Mauthausen Concentration Camp that still stands today as a monument to all that can wrong in human society. Walking through both places - the way prisoners may have walked as they left one world to enter another - we find a few other things the two places have in common. Along the way, we wonder if looking at history is really a matter of trying to step in the same river twice.