The Margraves of the House of Zähringen lived at Hohenbaden Castle atop a steep 410-meter cliff for four 4 centuries, since the beginning of the XII century. The castle had more than a hundred rooms and several stables, but in 1599 all this splendor was lost in fire, and the margraves didn’t reconstruct Hohenbaden.
Despite the influence of the fire and time, the castle ruins still look quite well: part of the wall at a level of several floors above, fragments of the sewage system that were ground-breaking for the Middle Ages, have survived. In 1999, Europe's largest 120-string Aeolian harp was installed in the castle wall. Its sound can be heard every day in summer. It is worth climbing to the castle also for seeing the panorama of the city, the Black Forest and the Rhine Valley.