Berlin Hauptbahnhof fall of the Berlin Wall in 1989, city planners began work on a transport plan for reunified Berlin. One element of this became the "Pilzkonzept" (mushroom concept), in which a new north-south railway line intersecting the Stadtbahn was to be constructed. The name derived from the shape formed by the new line and existing lines, which vaguely resembles a mushroom. In June 1992 the federal government decided that the new station should be built on the site of Lehrter Bahnhof. While close to the centre of Berlin and government buildings, the area was still not heavily populated. The following year,
Free University of Berlin committee appealed to the public for support. The municipal authorities of Berlin granted the foundation of a free university and requested the opening for the coming winter semester 1948/49. Meanwhile, the students committee in the German Democratic Republic protested against the formation, the GDR described the new university as the "so-called free university" in official documents until the fall of the Berlin Wall. The council-manager government accepted the by-law on 4 November 1948. The by-law achieved prominence under its alias ""the Berlin model"": The university was founded as a statutory corporation ("Körperschaft des öffentlichen Rechts") and was not directly subjected