Castle
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Predjama Castle
Predjama Castle is officially recognized by Guinness World Records as the world's largest cave castle, dramatically constructed directly within the natural mouth of a 123-metre limestone cliff face in south-central Slovenia. Famous for its association with the 15th-century rebel knight Erasmus of Lueg, the impregnable fortress conceals secret subterranean passages, medieval siege warfare, and a rich legacy of phantom encounters that fascinate historians and dark tourism enthusiasts.