The Bierpinsel is a futuristic concrete tower in the district of Steglitz in the South of Berlin. It was built in the 1970ies and is integrated into the Joachim-Tiburtius fly-over. Currently it is empty but there are plans to reopen it in 2025. It got its name because it looks a bit like a shaving brush and you used to be able to get beer there. It is probably my most favourite building in Berlin.