Treat the kids to some hands-on fun and discovery at Kindermuseum. There's a good chance you'll learn a few things too!
You'll have sightseeing choices galore when staying in Hietzing. Kindermuseum is an ideal place to begin here, but there are loads of other interesting sights to enjoy. Schönbrunn Palace, Vienna State Opera, and Hofburg Imperial Palace are close to the interactive exhibit for kids and will fill in your day nicely.