U2 (Berlin U-Bahn)
Underground line in Berlin
U2 is a line of the Berlin U-Bahn. The U2 line starts at Pankow S-Bahn station, runs through the eastern city centre (Alexanderplatz) to Potsdamer Platz, the western city centre (Wittenbergplatz, Zoologischer Garten, Theodor-Heuss Platz) and finally to the Ruhleben terminal station.
The U2 has 29 stations and a length of 20.7 kilometers (12.9 mi). Together with the U1, U3, and U4 lines, it was part of the early Berlin U-Bahn network built before 1914. The line between Potsdamer Platz and Zoologischer Garten was the western section of the "stem line" (Stammstrecke), Berlin's first U-Bahn line opened in 1902.
Overview
The line starts to the west of central Berlin at Ruhleben and runs on an embankment between Rominter Allee and the railway to Spandau (also called the "Olympic" or "Grunewald" railway). On the bend approaching Olympischen Straße, the line descends into tunnel to run beneath that road from Neu-Westend to Wittenbergplatz. Subsequently, the U2 swings onto Reichsstrasse to Theodor-Heuss-Platz, where it runs in a curve to Kaiserdamm. Under Kaiserdamm, which becomes Bismarckstraße at Sophie Charlotte-Platz, the tunnel runs straight to Ernst-Reuter-Platz. Here again, it swings to the southeast, following the course of Hardenberger Straße towards Zoologischer Garten station.
Begin with the source’s own compact description: “U2 (Berlin U-Bahn)” is underground line in Berlin. The dossier treats that line as a proposition to test through Berlin, U-Bahn and Underground, not as a finished interpretation.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 5, 2026. The linked authority identifier is Q99697. None of the 2 selected statements returned an explicit reference. The first chronological checks are 1914 and 1902.
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This entry incorporates text from “U2 (Berlin U-Bahn)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.