Connection Club is a popular club space in Berline for techno dancing with a dark cruising basement play area called the Twilight Zone. It first opened in 1989, the year the Wall came down, and is operated by Kalle Klatt (with Michael Sonntag), whose gay empire also includes adjacent shop Connection, neighboring bar Prinzknecht, established leather haunt Mutschmann's, and the now-defunct SM hotel the Kinky Tulip.