 In 1951 it was renamed "Nordbahnhof" ("North Station"), since the nearby Stettiner Bahnhof was no longer called by its original name because the formerly German city of Stettin had become the Polish city of Szczecin after the war.After the construction of the Berlin Wall on 13 August 1961, the station was a "ghost station" and was not in service until 1 July 1990, after German reunification.West Berlin trains ran through this and other stations without stopping, since only a few central U6 stations were on the east side of the Berlin Wall.