What is "wannsee"

Wannsee is a locality in the southwestern Berlin borough of Steglitz-Zehlendorf, Germany. It is the westernmost locality of Berlin. In the quarter there are two lakes, the larger Großer Wannsee (Greater Wannsee) and the Kleiner Wannsee (Little Wannsee), are located on the River Havel and are separated only by the Wannsee Bridge. The larger of the two lakes covers an area of and has a maximum depth of .