By Linda Tancs
Listed by Guinness World Records as the world’s largest cave castle, Predjama looks like any other medieval castle, except for the fact that the cliffside fortress is built into the mouth of a cave complex. The interior, then, is a network of tunnels leading to the second-longest cave in the country, where a colony of bats resides. The castle is open year-round; you can visit the cave from June to August when the bats aren’t hibernating.


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