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,
Berlin Customs Wall reminder of its heritage. The following streets follow the original route of the customs wall: Stresemannstraße (former "Königgrätzer Straße"), Marchlewskistraße, Friedenstraße, Prenzlauer Berg avenue, part of Prenzlauer Allee, Torstraße, Hannoversche Straße, Charitéstraße, part of Reinhardtstraße, and Ebertstraße. The 18 city gates and 2 river gates are still visible on the map, their names having been given to squares and streets. In clockwise order these are: Berlin Customs Wall The Berlin Customs Wall (German: "Berliner Zoll- und Akzisemauer" literally "Berlin customs and excise wall" ) was a ring wall around the historic city of Berlin, between 1737 and 1860; the wall