Viktor Emil Frankl was a Jewish-Austrian Psychiatrist and neurologic who founded Logotherapy. He published 32 books, among them the most famous "The Man's Seeking for Meaning" that describes his experience as a prisoner in Nazi concentration camps, including Auschwitz-Birkenau, and emphasizes the central importance of finding a destination in life to overcome trauma.
The small museum located in his house focuses on Frankl's treatment method and tries to give simple examples of the theory and its rationale.
I found it very interesting, and I indeed recommended it for travelers who have the patience to read and learn.
It's not allowed to take photos inside, so I only took a picture of the building.