Berlin’s most surreal bar experience is right where you’d expect it to be—in the trendy Friedrichshain neighborhood. Just a few blocks from some of Berlin’s most legendary nightclubs, the club Wilde Renate is a mismatched collection of buildings surrounding a small beer garden. It's an easy place to get lost, even more so because there’s a purposely-built labyrinth underneath the nightclub.
The labyrinth, Peristal Signum, isn’t just an art installation but a full-on experience for the mind. It was designed haphazardly by three artists over nine months in 2010. The maze was built completely out of found scrap materials (like most everything else in Berlin) and includes everything from glass bottles to car parts. For 10€, you're given a token to enter the labyrinth. Entries are scattered so that only one person enters at a time, though you're likely to run into people once inside.
Without spoiling too much, I'll say it's a trippy experience. Persistal Signum is open Wednesday to Saturday, from 6pm to 10pm, at Salon zur wilden Renate. Ask the bartender to put your name on the list to get inside the labyrinth. There's usually a wait.