When you visit Vienna, pick out, in advance according to Bird Dog's Museum Rules, what you want to see in a museum in one hour - and then leave and go to a cafe for a vino or a Vienna caffe, and walk around.
Last time we went, we just saw the Peter Breugel rooms in the Kunsthistorishes Museum. Worth the trip to Vienna and the climbs up the marble stairs. The wealthy Viennese loved those Dutch painters. Me, Mrs. BD, and lad. Another day, a daughter and I did the Belvedere while others did other things. We two had a fine day together, as she had figured out the train system in minutes and is loads of fun to explore with. Adventurous. We even visited Freud's apartments. Nice.
(My wife and kids are so adventurous, I just tie my sneakers and follow them. I love their company, but I think I am naturally more of a lazy cafe person. I rely on them all to enrich my life.)
Now they have a show of their 16th C tapestries. Faden der Macht. I'd like to see it but Vienna again is not on our 2-year Master Plan. We need to plan one or two more total-family parental trips before we grow old. Cape Cod, Tuscany, Provence.