Visit Postojna Cave, one of the most famous caves in the world, and Predjama Castle, the only preserved cave castle in Europe.
In demand: 19 of the next 30 departures are already sold out.
From the operator’s live schedule on Viator, checked Oct 14.
Your guide will meet you at the agreed pickup point in Trieste.
Postojna Cave, the queen of all caves, is one of the most famous caves in the world. It is Slovenia’s greatest tourist attraction and one of the largest karst monuments on the planet. This is the only place in the world where you can explore an underground landscape by electric train and encounter the cave’s most famous resident - the proteus (olm) - up close. A mesmerizing network of tunnels, passages, galleries, and halls, along with an incredible variety of karst formations and easy accessibility, are the key reasons for the cave’s enduring popularity, attracting more than 36 million visitors over the past 200 years.
Predjama Castle stands proudly above the surrounding landscape near Postojna Cave, in the charming village of Predjama. This picturesque, majestic, and mysterious fortress has perched dramatically halfway up a 123-meter-high cliff for more than 800 years. Its romantic charm is further enhanced by the Lokva River, which disappears into the underground depths beneath the castle. As the only preserved cave castle in Europe, Predjama Castle offers a fascinating glimpse into the ingenuity and architectural skills of the Middle Ages, when people sought - and found - shelter right at the entrance to the cave. During a siege in the 15th century, the castle became the refuge of its most famous and notorious owner, Erazem of Predjama. The legend of this daring knight and rebellious robber baron, who defied his besiegers for over a year until betrayed by a servant, still captures the imagination today - an enduring tale of courage, defiance, and mystery.
Reviews collected by Viator and Tripadvisor
Excurgo comparison of 203 Viator tours, recalculated daily.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Postojna Cave and Predjama Castle Day Trip from Trieste lasts about 5 hours. The itinerary has 3 stops.
Prices start at $131 per person for this Trieste experience, booked through Viator with the price shown before checkout. There is 1 booking option, so the final price depends on the option you choose.
According to the operator’s current schedule, it runs every day.
It can: 19 of the next 30 departures are already sold out, so booking ahead is a good idea.
Yes. Cancel at least 1 day before the start for a full refund. Later cancellations are non-refundable.
Yes, pickup is offered.
The experience is available in DE, EN, IT.
It is a small-group experience with a maximum of 45 participants.
Infants and small children can ride in a pram or stroller Infants are required to sit on an adult’s lap Specialized infant seats are available
Wheelchair accessible Transportation options are wheelchair accessible
Yes, bookings are confirmed instantly.
Reviews collected by Viator and Tripadvisor
It was a great tour. We really enjoyed the cave and castle. It would have been nice to have more time at both but our time on shore did not permit it. Our guide was wonderful and her knowledge of Slovenia was much appreciated.
Spectacular caves, worth visiting. The Italian-speaking guide Alexandra was very knowledgeable and friendly
What an excellent way to spend a day! Stephan was such a gracious tour guide, educating us on history and making sure we knew what we were about to see! The castle is breathtaking - a must see. The cave with the train ride was so fun! Amazing what nature does underground! Literally another world!!
This is a great tour… The cave is stunning and very beautiful. The cave tour lasts approximately 90 minutes which includes the 20 minute train ride in and out. Once inside you will walk approximately 1.5 Km and many sections of the path are very steep (uphill and downhill slopes). The walking part of the tour is guided with audio in several languages. Unfortunately , we found the audio difficult to hear at times. Make sure you bring a coat. The cave temperature remains at 10C (50F) throughout the year. The castle was very interesting and guests are provided with a self-guided audio tour available in many different languages. The information in the audio guide was excellent. Visiting the castle involves climbing many many stairs. Some of the stairways are very steep and the steps can be uneven in a few places. Contrary to the description, this is NOT a wheelchair accessible tour.
Stunning views from the castle and postman’s cave is beautiful! However, my husband and I were traveling with my elderly parents and this tour requires a lot of walking on inclines, declines and uneven terrain and poor lighting in the cave. Our fitness watch clocked 7,000 steps total. Several people outside of our group struggled to complete the amount of walking required. This outing should be advertised as vigorous, not as an electric train ride through the mountain. You will ride the train for a few minutes at the beginning, then you will walk approximately 5,000 steps, and then you get back on the train for a few minutes. Both landmarks are beautiful and worth seeing but you need to be relatively fit to complete the amount of walking required. Our tour guide Mia was fabulous! She shared a lot of information with us about the Slovenian culture! Highly recommend!
Wonderful trip! Wish we had more time in both locations so we could have gone into the museums/aquarium associated with them.There was no time built in for eating or shopping. Our guide, Tadej, was full of knowledge about his country, its history, geography, economy, and culture, spoke great English, and welcomed questions with a sense of humor. We’ve been in many castles in different countries in Europe, but this one was stunning and unique. The caves were the same. Our tour started late, robbing us of valuable time to eat, shop, use the bathroom or look into a museum, but that wasn’t Viator’s fault. The driver was in place 40 minutes before the meeting time, which was clearly communicated. Directions to the meeting place were clear. We took lots of pictures and videos to show the grands!
Definitely a lot of walking, but worth the visit. Castle was amazing. Cave were beautiful. Tour guide was awesome!
Great tour with the right timing. We visited the castle, the driver was waiting for us at the exit who then took us to the caves and then drive us back to the base. We relaxed being able to enjoy an experience that with public transport would have been impossible. Applause also goes to the boy, very young, who was super patient and very good at driving. Good!
Flawless service. It would probably not be possible to carry out these visits individually in such a short time. Just a possible delay to the schedule, if the customs officers (as on that day) overzealously check the identity of passengers...;-)
The caves are beautiful, suggestive and well organized. The route starts and ends with the train and on foot you walk for about 40 minutes so they are also suitable for children. At the entrance they give audio guides. Outside there is a small park (next to the parking lot) where you can have a picnic in the shade. The real surprise was the castle: ‘embedded’ in the rock is really very suggestive. The interior is quite sparse and there are not many furnishings because the environment is damp and they have not reached us. Here too they give the audio guide that tells the story of the castle, how they lived and the stories of those who lived there, in particular Erasmus of Predjama
| Tour | Duration | Rating | Price | |
|---|---|---|---|---|
| Postojna Cave and Predjama Castle Day Trip from Trieste | 5 hours | 4.7 (26) | $131 | |
 Postojna Cave & Predjama Castle - Small Group Tour from Trieste | 5 hours | 4.8 (54) | $142 | View |
 Postojna Cave & Predjama Castle excursion - Entrance fee included | 5–6 hours | 4.8 (49) | $222 | View |
 Postojna Cave & Predjama Castle - Shore Excursion from Trieste | 6 hours | 4.8 (30) | $139 | View |
 Postojna Cave and Predjama Castle - Private Tour from Trieste | 6 hours | 5.0 (15) | $330 | View |
 Short daily trip from Trieste to Postojna cave | 5 hours | 5.0 (8) | $114 | View |
 Private Day Trip From Venice To Prosecco and Miramare Castle | 7–8 hours | — | $512 | View |