With some terrific road trip options in the surrounding area, renting a car makes good sense. Without one, it wouldn’t be half as easy to enjoy everything that Freiburg im Breisgau, 25 miles away, has to offer. Soak up the sights beginning with Freiburg Main Cathedral, Schlossberg and Schauinsland Cable Car. The locals will also probably point you toward Villingen-Schwenningen, 30 miles away. If you only see one attraction here, make sure it’s Wanne Observation Tower. (But we’d also recommend International Aviation Museum and Franziskaner Museum.)