The regular ticket for entrance is 5 EUR and the student discount is 3 EUR. The collection is…read moreplentiful and presented well. There are also many one-off restrooms along the path of your visit. Even though DNA was discovered in this castle, the collection involved items like coins, Egyptian sarcophagi and white statues. If you're looking for more of the science history, go to the free exhibit with the plaque off of the courtyard. I didn't know what to expect but it was a pleasant enough collection. They have everyone going in one direction and control the number of people who should enter each interior room. You can easily spend a lot of time in the museum if you read everything. Oh, note that almost all of the text is in German with very little translations.