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Wikipedia know the following:
"There are many old towns in the Black Forest. Popular tourist destinations include Freiburg, Calw (the birth town of Hermann Hesse), Gengenbach, Staufen, Schiltach, Haslach and Altensteig. Perhaps the most popular location is Furtwangen, because of its University and the German Clock Museum. sOther popular destinations include such mountains as the Feldberg, the Belchen, the Kandel, and the Schauinsland; the Titisee and Schluchsee lakes; the All Saints Waterfalls; the Triberg Waterfalls, not the highest, but the most famous waterfalls in Germany; and the gorge of the River Wutach.
The Schwarzwälder Freilichtmuseum Vogtsbauernhof is an open-air museum that shows the life of sixteenth or seventeenth century farmers in the region, featuring a number of reconstructed Black Forest farms. The German Clock Museum in Furtwangen shows the history of the clock industry and of watchmakers.
For drivers, the main route through the region is the rapid A 5 (E35) motorway, but a variety of sign-posted scenic routes such as the Schwarzwaldhochstraße (60 km (37 mi), Baden-Baden to Freudenstadt), Schwarzwald Tälerstraße (100 km (62 mi), the Murg and Kinzig valleys) or Badische Weinstraße (Baden Wine Street, 160 km (99 mi), a wine route from Baden-Baden to Weil am Rhein) offers calmer driving along high roads. The last is a picturesque trip starting in the south of the Black Forest going north and includes numerous old wineries and tiny villages. Another, more specialized route is the 'Deutsche Uhrenstraße' ("German Clock Road"), a circular route which traces the horological history of the region."
Even more you can read in Wikipedia.
Very charming is the neighborhood to France, Switzerland, Austria and Lake Constance.