<p><br> Study in colors: A rider exits one of the many U-Bahn (subway) stations in Berlin, which claims the most extensive subway system in Germany.</p>

Alexanderplatz


Study in colors: A rider exits one of the many U-Bahn (subway) stations in Berlin, which claims the most extensive subway system in Germany.

Photograph by Stefano Amantini/Atlantide Phototravel/Corbis

Berlin City Life

See Berlin photos in this gallery from National Geographic’s Ultimate City Guide for Berlin.

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