Guided tour

From Trieste: Postojna Cave & Predjama Castle

4.7 / 5

72 reviews

Activity provider: KoperTrips
Guided tour

From Trieste: Postojna Cave & Predjama Castle

Activity provider: KoperTrips
Likely to sell out

From US$ 122.05 per person

Likely to sell out

Visit Postojna Cave, the best-known cave in the world, and Predjama Castle, the only preserved cave castle in Europe.

About this activity

Free cancellation
Cancel up to 24 hours in advance for a full refund
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Duration 5 hours
Check availability to see starting times.
Live tour guide
English, German, Italian
Pickup included
For Hotel guests the departure location is flexible.
Wheelchair accessible


  • Visit the best-known cave in the world
  • Take a ride on the underground electric train
  • Meet the most famous inhabitant of the cave - the proteus
  • Learn about the history of the only preserved cave castle in Europe
Full description

Postojna Cave, the queen of all caves, is the best-known cave in the world. It is also the greatest tourist attraction in Slovenia and one of the world’s largest karst (limestone) monuments.

This is the only place in the world where the underground landscape can be traversed on an electric train and where you get to meet this underground kingdom’s most famous inhabitant – the proteus (olm) – up close. 

A fantastic web of tunnels, passages, galleries, and halls, an astonishing diversity of karst features, as well as easy access are certainly the main reasons for the popularity of the cave and the large number of visitors (more than 36 million of them in over 200 years).

The Predjama Castle reigns over the surrounding area, not far from the Postojna Cave, in the idyllic village of Predjama. This picturesque, magnificent, defiant, mysterious, and impregnable castle has been perched up in the middle of a vertical 123-meter high cliff for more than 800 years.

Its romantic appeal is further emphasized by the idyllic Lokva River, which disappears into the underground world deep down below the castle.

As the only preserved cave castle in Europe, the Predjama Castle offers a unique insight into the building techniques and resourcefulness of people in the Middle Ages, who were looking for and found a safe harbor for themselves right at the entrance of the cave.

During a siege that took place in the 15th century, the castle provided a refuge for its best-known and most notorious owner – Erazem of Predjama. 

The legend of the courageous robber baron Erazem, who remained undefeated until one of his servants betrayed him, is still in people’s minds, inspiring and alluring as ever.

It was this safe abode of his that helped the brave knight resist the besiegers without much difficulty for more than a year. Let your guide take you through these unforgettable sights for an ideal day excursion.

  • Guide
  • Transportation
  • Postojna Cave entrance fee
  • Predjama Castle entrance fee
  • Insurance
  • Food and drinks

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Customer reviews

Overall rating

4.7 /5

based on 72 reviews

Review summary

  • Guide
  • Transportation
  • Value for money
  • Safety

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Visits of the castle and caves beyond expectations, and the transport from Trieste to Predjama / Postojna really practical with our guide Boris, welcoming and helpful. An opportunity/stop not to be missed for those visiting Trieste even just for a weekend; in addition to the beauty of the visit, the timing required for the tour outside the border (from 9 to 1430) also leaves room for visiting Trieste in the afternoon

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October 30, 2022

Well organized tour that meets customer expectations both in terms of transport and the welcome and guide service. The only flaw to report is the cost of the single trip, double that of the trip as a couple. If a higher price compared to €113 is understandable, a double cost is not appropriate.

September 18, 2022

Super recommended tour, the caves and the castle deserve 10 stars. Matt, our guide, was kind and super helpful as well as very knowledgeable about the local culture and history and made sightseeing and transportation easy and smooth. The only flaw was the pre-departure organization: the tour and the pick-up were confirmed only at 7pm the previous evening following several reminders.

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August 11, 2022

Product ID: 118783