On 1 May 1899 the area, then the largest village of Prussia, became an independent city and got its current name in 1912. Its independence ended in 1920, when it was made part of Greater Berlin . Between 1966 and 1975, the "Gropiusstadt" was built. This city-within-a-city was designed by architect Walter Gropius. Gropius was the last director of the Bauhaus school of arts and architecture, which set up in Berlin when it moved from Dessau. Gropiusstadt has over 60,000 inhabitants.