Being in Vienna, especially traveling with children, it's worth to go to the oldest Vienna zoo Schönbrunn, which annually receives more than 2 million visitors.

There is a zoo at: Seckendorff -Gudent-Weg 1130, Wien and is open to those who wish all year round, including holidays. On the official website of the zoo you can find out the opening hours for the months, the cost of tickets (and order them online) and a detailed description of how to get there.