the lines to Lübeck, Berlin and Hanover. It is the largest self-supporting station hall in Europe with a span of 73 m and it is the busiest station in Germany. In 1983 an underground platform was built immediately adjacent to the Hauptbahnhof for the S-Bahn to improve passenger transfers. Klosterthor station was until the completion of the new Hauptbahnhof the terminus of the link line. It was connected by a curve to the line to Berlin. Later, another connection was built to the Hannöverscher Bahnhof and to the Hamburg port railway. Klosterthor station is at the end the actual link line. From 1902 to 1906, the Stadtbahn was extended parallel with the Lübeck–Hamburg line to Hasselbrook where it turns toward Ohlsdorf. Lippeltstraße station operated between 1903 and 1906, during the reconstruction of the link line as a temporary terminus for the Berlin line, but only for trains from Bergedorf and Büchen. The long-distance trains from Berlin still ran over the old line to Klosterthor station, but this was also stopped in 1906. Berliner Tor station was built with the extension to Ohlsdorf in 1906. It is now one of the largest interchange on the Hamburg network, since a line branches off the Stadtbahn at the station to run parallel with the main line to Berlin and two U-Bahn lines also run through the station. The S-Bahn station is located on two levels, the lower one serves trains to and from Hasselbrook and the upper level serves trains to Bergedorf. Landwehr station was opened as part of the extension to Ohlsdorf in 1906. It had a reception hall in the neo-baroque style, but this was damaged during World War II and only partially rebuilt. In the 1970s the building was demolished. Hasselbrook station, opened in 1907, is the junction station between the Stadtbahn and the Vogelfluglinie. In addition to the S-Bahn station, it has a platform for regional services. Wandsbeker Chaussee station was opened in 1906 and is located on the street of the same name. It has connected with U-Bahn line U1 since its extension in 1962. Friedrichsberg station is located in the Dulsberg district and was also opened in 1906. Barmbek station is transfer point between the U-Bahn lines U2 and U3 and the S-Bahn S1 and S11. The suburban station was opened as part of the whole route between the Hauptbahnhof and Ohlsdorf on 5 December 1906. The