 To the north lies the island of Schwanenwerder and, opposite from the Greater Wannsee on the other side of the Havel, is the locality of Kladow (in Spandau).The Wannsee lake is well known as the number-one bathing and recreation spot for western Berlin, especially from a 1951 Schlager hit by teen idol Cornelia Froboess.The "Strandbad Wannsee", an open-air lido with one of the longest inland beaches in Europe and a popular nudist area, was built in 1920–30 after a concept by architect Richard Ermisch.