Brandenburger Tor

Like every medieval town, Berlin had a couple of gates  (in German: "Tor") through which one formerly entered the town.

If you look at any U-Bahn map you can find Kottbusser Tor, Oranienburger Tor, Schlesisches Tor, Hallesches Tor, Frankfurter Tor. They all are gone now, the only surviving gate being the one to the german county of Brandenburg. Ironically there's no underground station called "Brandenburger Tor". 

But this will be changed. There are plans for a new U-Bahn connecting Brandenburger Tor and Bundestag. 

It will be called U 55. Not that there are over fifty underground lines in Berlin, that's just to confuse the tourists. They have already started to dig the holes and hope to be ready in 2010. 

That's complete nonsens, probably thought up by one overpaid spaced out politician. If you walk slowly from Brandenburger Tor to Bundestag, it's a quite romantic 6-minute-walk. That surely needs a new underground line.

Nowadays of course the gate isn't a city gate anymore, it's a tourist attraction right in the center of Berlin.

Historic details about Brandenburger Tor: Wikipedia