Mint Museum

Free entry with free audio guide available in multiple languages. Checking out the coins throughout time and from different locations was really cool. I spent longer than I thought I would learning the history of the currencies. Note before visiting that a passport is required to enter. This happened to be the one day I didn't bring mine with me and I had to go back to get it, which sucked. They also did not have the person there that does the free souvenir coin so I wasn't able to get one. Can't complain too much since it's free, but it was a bummer. Luckily, there's a store to buy a more legit coin if you want. Overall, great experience.