as on the Charlottenburg line: Uhlandstraße The previously double-track Wittenbergplatz station, which was only equipped with two side platforms, had to be completely rebuilt. A junction station was built with five platform faces, a sixth was prepared and a vestibule was built. The cities of Wilmersdorf and Charlottenburg presented various proposals; Finally, however, the chief of police recommended building it according to the plans of Alfred Grenander, the in-house architect of the Elevated Railway Company. The stations in the Wilmersdorf area were elaborately designed, because the city was prosperous and wanted to show it. Today this can still be seen at the Hohenzollernplatz, Fehrbelliner Platz, Heidelberger Platz, Rüdesheimer Platz and Breitenbachplatz stations. Heidelberger Platz represented an additional special feature, because the line of the Ringbahn is very low at this point in a cutting, so the U-Bahn had to be tunnelled even deeper. Therefore, beyond the underpass of the Ringbahn, there was the possibility to use the large space between the top of the carriages and ground level and design the station even more magnificently than the others on this line, that is like a cathedral with a hall vault and hanging illuminated candelabras (it is sometimes compared with the magnificent underground stations of the Moscow Metro from the 1930s). In addition, outside the station, the tunnels in both directions were built with a tunnel-like profile as far as the depth below the surface permitted (the purpose of this subway tunnel construction, which was rare in Berlin at the time, was to save large amounts of steel girders, which were required everywhere with cut and cover construction). Beyond Breitenbachplatz, the line reached the Dahlem Manor lands. Due to the sparse development, the route could be built in an open cutting. Since the platforms could not be further decorated, the architects focused primarily on the individual design of the entrance buildings. The additional route to Uhlandstraße, which Charlottenburg had won in the "negotiation poker", only received one more station. The route branches off at Wittenbergplatz, runs parallel to the tracks of today's U1 as far as Breitscheidplatz and continues under Kurfürstendamm to Uhlandstraße station. An extension to Halensee was planned. At the intersection with the newly built large profile route G (now: line U9), another station was added in 1961 with the Kurfürstendamm station, which received side platforms. The lines to Thielplatz and to Uhlandstrasse both opened on 12 October 1913.