The station opened on 27 July 1936 in the course of the building of the
Nord-Süd Bahn tunnel. Train service discontinued on 21 April 1945 and could not be resumed until 2 December 1946 as the tunnel was flooded. The station was again closed with the construction of the
Berlin Wall on 13 August 1961 and for decades became one of Berlin's
ghost stations, as while both terminals of the
Nord-Süd railway line were located in
West Berlin, the station itself was located in the
East. Unter den Linden later reopened on 1 September 1990, one month before the
German reunification. On completion of the new
U55 line of the
Berlin U-Bahn from
Berlin Hauptbahnhof, the U-bahn station started operations as its temporary southern terminus and as an interchange with the
Nord Süd S-Bahn lines. Both the U-Bahn and the S-Bahn station were renamed
Brandenburger Tor in 2009 to distinguish them from
Unter den Linden U-Bahn station at the junction of Unter den Linden with the
Friedrichstraße. The U5 line through the station to the east opened on 4 December 2020. ==Gallery==