Konstanz is a Landkreis (district) in the south of Baden-Württemberg on the German-Swiss border, situated along the shores of Lake Constance. Neighboring districts are Schwarzwald-Baar, Tuttlingen, Sigmaringen and Bodenseekreis. To the south it borders the Swiss cantons of Zurich, Thurgau and Schaffhausen. The municipality of Büsingen am Hochrhein is an exclave of Germany surrounded by Swiss territory.