Sigmund Freud was a Jewish-Austrian psychiatrist and neurologic. He lived and worked in Vienna until 1938 when the Nazis forced him to leave. He founded the Psychoanalysis theory and became one of the most influential scientists in the 20th-century.
The Sigmund Freud Museum is located in Freud's house and clinic for 47 years. Unfortunately, the museum has only one renovated room. The other rooms display images and items of Freud, which you can learn about using a detailed guide on your smartphone.
The museum is not impressive at all. I saw that they intend to redesign in the coming years – I sure hope so. Freud deserves more than that.