Postojna Cave & Predjama Castle from Trieste
Overview
Available languages
5 hours
Mobile ticket
Visit Postojna Cave, the best-known cave in the world, and The 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
Travelers should have at least a moderate level of physical fitness
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
The tour can be booked in English, Italian, or German. Occasionally, the escort guide in the vehicle may speak only English, depending on availability, however, the guided visits in the cave and castle will be conducted in the booked language.
What To Expect
Trieste
Your guide will pick you up at the agreed starting point in Trieste - hotel, cruise terminal, 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).
Options
Postojna Cave & Predjama Castle 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
133 reviews
Total reviews and rating from Viator & Tripadvisor
Great tour in lovely Slovenia!
Carolyn L,Jun 28, 2026
- Review from Viator
5.00We loved our guide, who is originally from Slovenia, and the driver! Great information en route, and very kind to me with limited mobility due to knee injury. Be aware of fast paced walking in cave, often uphill. Bring a jacket for cave, but chill air was so welcome in contrast to outdoor heat wave! Recommend this combined tour, especially because of our Guide!
Slovenia is beautiful. ...
Janna L,Jun 11, 2026
- Review from Viator
5.00Slovenia is beautiful. Enjoyed the cave experience - bring a jacket. The castle tour was also enjoyable. Hands down a beautiful country.
Totally worth it .
Alma T,Jun 6, 2026
- Review from Viator
5.00Castle and caves are really amazing; plus I love the scenery driving to Slovenia ; it is so green and beautiful . We enjoyed our tour.
Since instructions for...
John P,Jun 3, 2026
- Review from Viator
4.00Since instructions for pickup were for specific time , should have been made aware there were pickups along the way .. thought it was a smaller group
Once in a lifetime experience
Mike G,May 20, 2026
- Review from Viator
5.00Once in a lifetime experience. The castle very unique in every aspect. The caves were incredible especially the mini train ride inside to get you to the center of the cave.
Really great tour!
GaryJohn L,May 13, 2026
- Review from Viator
5.00We had a great tour thanks to Stephan. The sights were amazing and he also took good care of us. A small group and lots of information but friendly, polite and not rushed. He is a proud Slovenian and enjoyed showing off his beautiful country. We especially enjoyed the castle and the ride there.
Great driver - Castle & Cave
janetbF9725DV,May 12, 2026
- Review from Tripadvisor
5.00Thank you, Matjaź Levac (“Matais with glasses” 😁), for such an amazing day. Your local knowledge and commentary during the drive to and from the castle and cave were both informative and entertaining. The castle and cave were incredible to see, and we’d definitely recommend this tour as a fantastic way to spend the day. We had booked six shore excursions with various companies. The communication from Koper Trips via text and WhatsApp messages was extremely helpful – the best communication out of all the other providers.
Stunning views
Yara H,May 8, 2026
- Review from Viator
5.00This was a great half-day trip, with all entry tickets included which made everything run smoothly. The meeting point was easy to find and we were taken through some lovely countryside where we learner about Trieste's multicultural history. Our guide was very kind, engaging and well-organised. At Predjama Castle we were given a helpful audio guide - it was wonderful walking through the castle and cave. The highlight was the Postojna cave tour, where we took a train and walked through to see the formations up close. Bring a jacket as it is usually much cooler in the castle and caves than outside (Postojna has a constant temperature of about 10 degrees) but it is a wonderful experience.
Postojna castle and caves were great!!
mark g,Apr 29, 2026
- Review from Viator
5.00The driver Mattjas (wearing glasses) was a great driver and tour guide—explaining points-of-interest and Slovenian cultural information along the way. The castle was very interesting. The cave tour—via train and walking—was an unforgettable experience.
Slovenia to discover
giovannacS3618IT,Apr 16, 2026
- Review from Tripadvisor
5.00It was a very nice experience and we appreciated the punctuality, the professionalism of Stefan, the guide who accompanied us from Trieste to the Park and then brought us back to Trieste; very good also the guide who welcomed us to the Postojna cave and accompanied us for the entire tour.
Related Experiences
Operated by KoperTrips.com