I'm looking for suggestions of things to do in and around Vienna with an almost 4-year-old. When looking for things to do with our little ones we look for a blend of grown-up and kid appeal (ie. visit a cultural sight near a large park where he can run before/afterwards) or we will spend part of a day doing something kid-specific. Not surprisingly, museums are low on our list unless they have some element of interactivity for kids. We tend to be more countryside/culture focused than touring the insides of palaces and museums. Fountains, parks, pigeons, trains/boats and anything musical are always a hit and great to combine with more 'boring' adult things.
We will have five full days in Vienna at the end of September and will be traveling by car, except when we use public transport in Vienna. We will use a few of those days for day trips to Melk, boat trip on the Danube/biking along the Danube, etc. We love finding local, out-of-the-way places that your average tourist might not see (example: last fall we took a rainy-day trip from Interlaken to an outdoor zoo with deer wandering freely that was great fun for all of us).
At the top of our list so far are Haus der Musik, the butterfly house (Burggarten), Opera for All, Schonbrunn Palace, Vienna Woods/Heuriger. We'd love any suggestions in or around Vienna.
Thanks!