The rocky landscape surrounding the town of Dahn in the Pfalz region is famed for its castles and bizarre sandstone formations. The best-known fortress here, Trifels Castle, is one of the most popular in Germany, with over 100,000 visitors a year.
Local lore has it that legendary German king Frederick I. ("Barbarossa”) once slept there. But as well as attracting history buffs, the elevated site is now increasingly popular among climbers.