Things to do with kids in Vienna

Haus des Merres: Aqua Terra Zoo, Vienna

The Haus des Merres is a great activity for families with kids in Vienna. It would be easy to get lost in here for a full day and forget about all the other great places that Vienna has to offer. The zoo is contained in a re-purposed military facility from World War 2. I doubt there are too many facilities from that time that have been put to better use.