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Postojna Caves & Predjama Castle (Underground Treasures and Legends)

This excursion includes a tour of the famous Postojna Caves, the world's biggest underground cave complex, and a visit to the nearby Predjama Castle, built into a cave in a vertical cliff face.

The Postojna Caves, one of Slovenia's most notable natural sights, consist of a 27-kilometer system of underground caves, tunnels, galleries, and halls with spectacular dripstones. A small cave train will take you on a tour around the caves, which are also known for providing habitat for Proteus anguinus, an endemic amphibian salamander.

Predjama Castle, part of which is built into the middle of a 123-meter-high vertical cliff face, was originally home of the legendary outcast knight Erasmus. The present castle, which was given its Renaissance appearance in the 16th century, houses a museum.

The price includes

  • transfers
  • guidance
  • admission to the Postojna Caves
  • admission to the Predjama Castle


Daily at 8:00 and 14:00


6 hours 


  • €109.00 per adult
  • €54.50 per child aged up to 12 years

Number of participants

The excursion is run for a minimum of 2 people.

Departure point

The departure point is to be arranged on booking.

Language options



We recommend wearing warm clothes and trainers since the temperature in the cave is 10°C.