Burg Spaltfels

Irndorf, Germany, Germany

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Burg Spaltfels in Irndorf, Germany, is a vanished medieval spur castle dating to the 12th or 13th century, perched at 750 meters above sea level on a stark rocky ridge called the Spaltfelsen overlooking the Danube Valley about 1,200 meters south of the village in Baden-Württemberg's Tuttlingen district.

Once spanning a rectangular 60-by-35-meter plateau with roughly 2,000 square meters of inner space protected by a northern neck ditch, it left no visible ruins today, likely lost to time and the 1960s demolition of the overhanging rock for traffic safety.

Popular among hikers for its dramatic views toward Beuron Abbey, Wildenstein Castle, and the Upper Danube's steep cliffs, the site blends seamlessly into the scenic Swabian Jura landscape near other viewpoints like Rauher Stein and Eichfelsen.