Oberbaum Bridge

The Oberbaum Bridge, or Oberbaumbrücke in German, was built in the late 1800s and crosses the River Spree to connect the neighborhoods of Kreuzberg and Friedrichshain in Berlin. The bridge has mock medieval turrets and seven arches. It's a two level bridge with the lower level for cars and the upper level for the U1 U-bahn trains. 
During the Cold War, this bridge was a landmark dividing East Berlin from West Berlin. Armed guards patrolled the banks of the river, and the bridge was one of the crossing points from west to east only. The U-bahn line that crossed the bridge had to terminate at an earlier stop, but a few years after reunification, the train was reconnected and once again went across the bridge.
Today the bridge is decorated with street art and graffiti. There is a nearby beach on the banks of the river, which used to be no man's land blocked by barbed wire. Also near the bridge is the famous East Side Gallery. The Oberbaum Bridge has been featured in several films, including “Run Lola Run” and “The Bourne Supremacy.” 
In 2001, Kreuzberg and Friedrichshain were joined in as one jurisdiction, so the bridge no longer crosses a boundary. However, the Oberbaum Bridge still stands as a symbol of reunification in Berlin.

Practical Info

To get to the Oberbaum Bridge, take the U1, S5, S7, S75 or M10 to Warschauer Strasse.