Built between 1972 and 1976 by the architects Ralf Schüler and Ursulina Schüler-Witte in Berlin as part of a larger urban project, the Bierpinsel (literally: “beer brush”) is a 47-meter-high tower building that refers to the pop-art architecture strand. It consists of an exposed reinforced concrete structure which enlarges at the top to contain a space of three floors formerly used as a restaurant. It breaks away from the surrounding historical buildings due to its shape and to the red-orange colour with which it was originally painted. Currently unused but placed under monumental protection, it was repainted in dark colours by a group of street artists in 2010.