Postojna Cave and Predjama Castle Day Trip from Trieste
Overview
Available languages
5 hours
Mobile ticket
Visit Postojna Cave, one of the most famous caves in the world, and Predjama Castle, the only preserved cave castle in Europe.
Additional Info
Wheelchair accessible
Infants and small children can ride in a pram or stroller
Service animals allowed
Public transportation options are available nearby
Infants are required to sit on an adult’s lap
Specialized infant seats are available
Transportation options are wheelchair accessible
Suitable for all physical fitness levels
Hotel Guests must advise supplier as soon as possible: hotel details
Cruise Passengers must advise supplier as soon as possible: ship name, arrival time and departure time,
The temperature inside the cave is constant throughout the year (10 °C), so warm clothing and sports footwear are recommended
What To Expect
Trieste
Your guide will meet you at the agreed pickup point in Trieste.
Postojna Cave
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.
Options
Postojna Cave and Predjama Castle Day Trip from Trieste
What‘s Included
Pickup and drop-off
Driver/guide
Insurance
Transportation
Food and drinks
Gratuities
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
Reviews
22 reviews
Total reviews and rating from Viator & Tripadvisor
Spectacular cave (with lots of walking) and unique castle (with lots of stairs)
John O,Jun 10, 2026
- Review from Viator
5.00This 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.
Beautiful, but requires a lot of walking on uneven terrain!
Erika V,May 26, 2026
- Review from Viator
4.00Stunning 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!
Recommend very highly!
Cherilyn A,May 9, 2026
- Review from Viator
5.00Wonderful 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...
Michael R,May 8, 2026
- Review from Viator
5.00Definitely a lot of walking, but worth the visit. Castle was amazing. Cave were beautiful. Tour guide was awesome!
Great tour
Irma D,May 3, 2026
- Review from Viator
5.00Great 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!
Good deal for these two visits in 1/2 day
GrandTour27271770811,Apr 26, 2026
- Review from Tripadvisor
5.00Flawless 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...;-)
Very nice caves but the surprise was the castle
Eloïse F,Aug 27, 2022
- Review from Tripadvisor
5.00The 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
Return to Slovenia to see the caves and castle.
Baldassarre A,Aug 22, 2022
- Review from Tripadvisor
5.00The Caves are fantastic, never seen anything like it. Excellent organization, do not be afraid of the line, because at the fixed times everyone enters. I recommend to buy your tickets online before departure, with the audio guide (you will be the first on the train). Duration: one and a half hours, of which about one hour on foot with a guide. The Castle is unique is fantastic, inside the rocky mountain and inside rooms and floors shared between caves and rooms. Many steps to climb, including some in narrow corridors. Worth it is impressive.
Lovely castle
elas1082,Dec 29, 2019
- Review from Tripadvisor
5.00The castle in the rock is worth visiting, amazement at the ingenuity of the human being. The caves are beautiful but expensive, personally I appreciated much more the caves of San cazano
Birthday Gift
Topo967,Dec 26, 2019
- Review from Tripadvisor
5.00Surprise for my Birthday Stay in Trieste and gone in the day Beautiful fascinating caves super described by the Italian guide Gregor What about...to see... Super beautiful Predjama Castle Unique detail of its kind... Not suitable for those with walking problems For everyone else to see!!!! Audio Guide Council
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