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.
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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.