Question: top 20 things to do in vienna?
Answer: Schönbrunn Palace. Source: flickr. ...  Hofburg Palace. Source: flickr. ...  St Stephen's Cathedral. Source: flickr. ...  Schonbrunn Gardens. Source: flickr. ...  Rathaus. Source: wikipedia. ...  Tiergarten Schonbrunn (Vienna Zoo) Source: flickr. ...  Belvedere Museum. Source: flickr. ...  Vienna State Opera.