Freiburg im Breisgau is the fourth-largest city in the German state of Baden-Württemberg, situated at the southwestern foothills of the Black Forest on the Dreisam River. It serves as a commercial and intellectual center for the Upper Rhine region and lies within the Breisgau, one of Germany's warmest areas in the south of the Upper Rhine Plain. The city acts as a tourist entry-point to the scenic Black Forest alongside Offenburg and is located near the borders of France and Switzerland.