Key Points:
Vienna is one of the top cities to visit in the world.
Nomadic Matt has provided a pretty good travel guide for Vienna.
The primary things to do in Vienna include: the Imperial Palace (1 day), the Museumsquartier (1 day), House of Music and Schonbrunn Palace (1 day), Belvedere Palace and the Natural History Museum (1 day), the Mozart Museum and the Albertina (1 day).
According to Wikipedia, "Vienna is the capital, largest city, and one of nine states of Austria. Vienna is Austria's most populous city, and its cultural, economic, and political center. It is the 6th-largest city proper by population in the European Union and the largest of all cities on Danube river."
Here we quote the best way to travel in Vienna provided by Nomadic Matt, a New York Times best-selling author of How to Travel the World on $50 a Day and Ten Years a Nomad, as well as the founder of his website.
Check ChatGPT's answer for alternative itinerary.