Postojna Cave (Pula and Istrian Coast)

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Postojna Cave

The largest cave in the Karst region is part of a 22km network. It's been open to the public for the past 200 years. Take a tour to see its world-famous interiors and learn about the cave's indigenous wildlife and history at the exhibition. There's also a concert hall inside the cave that holds up to 10,000 people.