Behind the Rathaus in Vienna there are some nice bars and restaurants that, in the daytime, are also cafes. During the Rathaus film festival (the name is deceptive, actually a series of recorded concerts or operas projected onto a huge screen)It's pretty fun, but if that particular opera isn't your thing or you just want a break from the crowds, take a breather and wander round the back to gaze at the architecture.. or the moon..