Abel was exchanged for Powers here at Glienicke Bridge here.  The bridge is famous as the bridge of spies because of the exchanges made between he Soviet Union and the West during the Cold War.

The Glienicke Bridge (German: Glienicker Brücke) is a bridge on the edge of Berlin that spans the Havel River to connect the cities of Potsdam and Berlin near Klein Glienicke. The current bridge, the fourth on the site, was completed in 1907, although major reconstruction was necessary after it was damaged in the Second World War.

• http://en.wikipedia.org/wiki/Glienicke Bridge