The Vienna Museum of Natural History
If you are interested in science, or geology or life in general, you should definitely visit the Vienna Museum of Natural History. The museum was originally created to house the extensive collection of Emperor Franz Joseph I. Its collections on display cover 8,700 square metres (94,000 sq ft) and it contains more than 30 million objects, some of which date back over half a billion years.
And if you go there on your birthday, you’ll be able to enter for free!!!