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Postojna Cave and Predjama Castle Tour
4.4
44 Ratings
Koper
Come explore the Postojna Cave, globally renowned for its splendor, and The Predjama Castle, Europe’s lone preserved cave castle.
Come explore the Postojna Cave, globally renowned for its splendor, and The Predjama Castle, Europe’s lone preserved cave castle.
Duration:
5 hours
Cancellation:
24 hours
Highlights
- Koper - Your guide will pick you up at the agreed starting point in Koper, Slovenia - hotel, cruise terminal, bus station, train station etc. (please contact us after the booking so the appropriate arrangements can be made).
- Postojna Cave - Postojna Cave, the queen of all caves, is the best-known cave in the world. It is also the greatest…
- Koper - Your guide will pick you up at the agreed starting point in Koper, Slovenia - hotel, cruise terminal, bus station, train station etc. (please contact us after the booking so the appropriate arrangements can be made).
- Postojna Cave - 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 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, astonishing diversity of karst features, as well as easy access are certainly the main reasons for such popularity of the cave and a large number of visitors (more than 36 million of them in over 200 years).
- Predjama Castle - 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 into 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 about 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 which helped the brave knight resist the besiegers without much difficulty for more than a year.

What's Included
- Driver/guide
- Insurance
- Hotel/port pickup and drop-off
- Driver/guide
- Insurance
- Hotel/port pickup and drop-off
What's Not Included
- Food and drinks
- Gratuities
- Food and drinks
- Gratuities
Additional Information
- Cruise ship passengers must provide the following information at time of booking: ship name, docking time, disembarkation time and re-boarding time
- Hotel guests must advise supplier as soon as possible: hotel details
- The temperature inside the cave is constant throughout the year (10 °C), so warm clothing and sports footwear are recommended
- Cruise ship passengers must provide the following information at time of booking: ship name, docking time, disembarkation time and re-boarding time
- Hotel guests must advise supplier as soon as possible: hotel details
- The temperature inside the cave is constant throughout the year (10 °C), so warm clothing and sports footwear are recommended
Location
Koper
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Customer Ratings
4.4
(44 Ratings)
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Lyn_r
Oct 26, 2025
Walk, walk, walk! - Great excursion but 1 1/2 hours of walking inside cave after tram ride. It is not flat, many incline and declines…need to be comfortable walking in those parameters.
Review provided by Viator
Caryn_c
Oct 20, 2025
Fun tour of both the cave... - Fun tour of both the cave and castle! Returned in plenty of time to make our cruise. Would definitely recommend this tour company.
Review provided by Viator
Markpanama101
Oct 11, 2025
Excellent tour, with enough time provided - Dana was very engaging, informative and super helpful for me and the rest of the group. The amount of time at both sites was ideal. The castle was great to explore, as was the cave. The tour provided by the attraction itself for the cave feels hurried, as they are moving all the groups along.
Review provided by Tripadvisor
Colleen_b
Oct 6, 2025
Interesting cave - Very interesting cave tour. Train takes you part of the way inside the cave and you walk a good portion of the tour. Lots of walking on inclined surfaces.
Review provided by Viator
Walterw_h
Sep 25, 2025
Amazing & beautiful! - Words really can’t explain how extraordinary these caves are. Wear a jacket or sweatshirt. The castle was beautiful and the audio guide was easy to use & understand. Make sure to check your tour meeting time the day before. I had written down the wrong time & we missed our ride. Our guide tried to get in touch with us but we didn’t have our phone turned on. We had to take a taxi to get to the caves & meet up with our tour group which made for a stressful beginning. I do think there should be a little more time between the caves & the castle or after the castle before getting in the small bus to return to Koper. Very thankful for the taxi driver who got us to the caves in time to join our tour group so we did not miss out seeing these 2 special places.
Review provided by Viator
Claire_w
Sep 24, 2025
Great experience! Must see/do! - Great experience! Dress warmer than you think you should! The train ride in and out of the cave is very chilly.
Not recommended for those who struggle to walk long distances or climb stairs.
The overall experience was great and well narrated.
Review provided by Viator
Hazel_h
Aug 19, 2025
Koper caves and castle tour - The caves are sheer magic and breathtaking. Well worth the experience. My only dislike was our group was too big and difficult to hear and stay with guide. Lots of groups there. Slovenia is an impressive country. Only 34 years since it became independent it is beautiful, clean, and felt very safe. Zero unemployment
Review provided by Viator
Diane_k
Aug 18, 2025
Great guide and driver - Our guide Tina and driver Robby were fantastic! Reading some of the previous reviews made us a little hesitant about going on this excursion, but both Tina and Robby quickly dispelled any doubts about the service.
Let’s start with the transportation. We had a 18 passenger Mercedes Sprinter van that was very comfortable. Robby was a great driver navigating the narrow roads getting us to our destinations. Upon completing both tours, he was there waiting for us!
Tina as our guide spoke 5 languages and was very fluent in English. She is a wealth of knowledge and shared a lot of regional history as well as information about the caves and castle as we rolled along.
The attractions were as advertised and highly recommended. Overall this was a worthwhile trip and Tina and Robby were a big factor in making this a day to remember.
Review provided by Viator
Kathy_a
Jul 26, 2025
Cave & Castle experience - This is a unique, beautiful experience. We were part of 14, 2 vans. Barbara & Jana were our informative guides/drivers.
Review provided by Viator
Dot_l
Sep 5, 2025
Beautiful but Rushed!! Disappointed 😞 - The caves are beautiful, however the whole tour was rushed. The train was late getting us in so We were pushed along and not afforded the pleasure of enjoying them. At the end of the walk we were told to point out the fish to the person behind us so we didn't waste time and we were told not to buy anything from the underground post office as there wasn't time and we could buy the same souvenirs from up top. Their running behind schedule shouldnt be the clients problem. They then put us on the train and left us sitting for 10min while they waited for other groups! They seemed very proud that they can push 10,000 visitors through in a day. If you want to enjoy this beautiful site don't go on a tour, take yourself and get an audio guide. The castle was amazing and well worth the visit (self-guided audio)
Review provided by Viator
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