River Danube is beautiful, but it is muddy, not blue as composed by Johann Strausse.  However, "Blue Danube" flows well worldwide. National theater looks even more
grandios than the Opera house.  I saw a contemperary dance there by a French troupe advertized in the poster on a street WC. Fabulous!
Vienna is a beautiful city, the architecture even the door knob showed Viennese live in a style.
A sculpture at Schonbrunn garden is as ornate as it can be.  The garden certainly made a statement of the royal power! 
Municipal hall provides free movie in the summer, I saw two films  there as part of Vienna Film Fesitval
It's a hangout place with food and drink, Viennese party ground.
Schonbrunn palace survived the world war II though half of the Vienna didn't.  The monument against war and Facist is a public reminder.