My husband and i will be travelling to Vienna in January for five days. Everywhere we go, we like to do something outside of visiting museums, shopping etc but that is still unique to the place that we are visiting. Previously we have done things like falconing, cooking classes, camel riding and 4wd in the dessert, hiking, swimming with turtles, writers (literary) conventions etc. We are a young couple and are both reasonably outdoorsy and enjoy plays, opera's, films , books, foods, love wildlife - overall adventurous.
Anyway, to cut to the chase, I was wondering whether there are any particular activities out of the norm that would you recommend for us to do that are unique to vienna.