Slussenområdet is an area of central Stockholm, on the Söderström river connecting Södermalm and Gamla stan. The area is named after the locks between Lake Mälaren and the Baltic Sea. Called Karl Johanslussen, the locks themselves allow passage between these two bodies of water. Slussen also refers to the cloverleaf interchange and associated pedestrian passages and walkways opened on 15 October 1935.
