Schwielowsee (German pronunciation: [ˈʃviːloːˌzeː]) is a municipality in the Potsdam-Mittelmark district, in Brandenburg, Germany. It is situated on the shore of the Schwielowsee lake, through which the River Havel flows. The municipality was founded on December 31, 2002 in merger of the three villages Caputh, Geltow and Ferch. The Caputh Ferry, a cable ferry across the Havel, links Caputh and Geltow. In the east Schwielowsee shares border with the City of Potsdam, in the west with the town of Werder (Havel).