Konstanz (or Constance) is a district (Kreis) in the south of Baden-Württemberg on the German-Swiss border, situated along the shores of Lake Constance. Neighboring districts are (from west clockwise) Schwarzwald-Baar, Tuttlingen, Sigmaringen and Bodenseekreis. To the south it borders the Swiss cantons Thurgau and Schaffhausen. The municipality of Büsingen is an exclave located inside Schaffhausen.