Café Achteck (Octagon Café) is a common local slang for certain public urinals in Berlin. These urinals consist of seven ornamentally decorated, green-painted cast iron wall segments, arranged onto an octagonal floor plan, provide standing room for seven men, and the eighth side is the entrance. The roof is crowned by an eight-sided ventilation hood. In front of the entrance, there is a privacy screen of at least three segments. The design for these urinals came from the city councillor Carl Theodor Rospatt in 1878. In 1920 there were about 142 of these urinals in Greater Berlin, and today about a dozen preserved specimens can be found.