Berg Kandel
This spot can satisfy your needs for hiking, mountaineering, gliding, and paragliding. It is definitely worth staying a few more days.
Breitnau
Here you can experience glass workshops, Ravennabrücke (Ravenna Bridge), and Höllentalbahn (Höllental Valley Railway).
Feldberg
This attraction is best suited for hiking and winter sports, where you can experience the gifts of nature.
Hinterzarten
This is a natural air spa resort where you can relax. There are large green lawns and mountain views for you to enjoy.
St. Märgen
This is the legendary spa and pilgrimage site, natural adventure park, and monastery museum.
Waldkirch
This place is home to ancient castle ruins and the Elztalmuseum, which is also very worth visiting. It is one of the must-see spots.