Visiting this museum on a Sunday is definitely worth it, I felt like a small child on a field trip with class again. Going through the museum made me really excited and I enjoyed going to every new room there was. So much to look at!
The museum is an absolutely beautiful building itself, it was built in 1889 and feels like a palace. There are two floors - one with minerals, stones, dinosaurs and anthropology and the other floor full with various animals.
When having a coffee in the top floor, I took two shots of the beautiful dome, whilst my boyfriend took some shots of me. One of which I used as a reference for drawing my first ever self portrait.
Right across from the National History Museum is the Kunsthistorisches Museum Wien, which is the Museum of Art; that is still on my list of must-see places in Vienna.
Both of these Museums are right in the city center and about a 1 minute walk to Hofburg (yet another palace, just much bigger) and a 1 minute walk the other direction is Museumsquartier, the arts and museums district.
So if you love art and have a spare day in Vienna, definitely head the Natural History Museum direction, that is, right here (map).