sentences:  The area was completely devastated in World War Two, particularly in an air raid on 3 February 1945 and the Battle of Berlin which followed.In the 1960s Mehringplatz was redeveloped as a pedestrian zone located at the centre of a large social housing area according to a plan conceived by Hans Scharoun, which was ultimately executed by the Berlin architect .During the 1990s, the installation of striking murals was used to decorate the lower walls of the courtyard areas of the housing blocks.