Badenweiler (High Alemannic: Badewiler) is a health resort and spa in the Breisgau-Hochschwarzwald district of Baden-Württemberg, Germany, historically in the Markgräflerland. It is 28 kilometers by road and rail from Basel, 10 kilometers from the French border, and 20 kilometers from Mulhouse. The nearest big city on the German side of the border is Freiburg, about 30 kilometers away.