You will discover the underground world of Postojna Cave, the most popular karst cave in the world. The guided tour will consist of a journey by electrical train and will be followed by a walk through beautiful chambers and passages with spectacular drop stones, pillars, limestone curtains and other unforgettable formations. Continue to the idyllic village of Predjama where you will be amazed by the fairy-tale medieval Predjama Castle with its dramatic setting in the gaping mouth of a cavern, halfway up a hillside. Learn about the legend of the famous Erasmus – ‘Slovenian Robin Hood’ and return back to Ljubljana.
Prices change with the date; the lowest is shown.
From the operator’s live schedule on Viator, checked Oct 22.
Visit of Predjama Castle
Visit of Postojna cave
Drop off in Ljubljana
Reviews collected by Viator and Tripadvisor
Excurgo comparison of 413 Viator tours, recalculated daily.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Postojna cave & Predjama castle half day – all tickets included lasts about 5h 30min. The itinerary has 3 stops.
Prices start at $121 per person for this Ljubljana 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, starting at 8:30 AM.
Children aged 2–11 pay from $61, adults from $121. Infants go free.
Yes. Cancel at least 1 day before the start for a full refund. Later cancellations are non-refundable.
The meeting point is By the water fountain in front of the hotel. Hotel pickup is not part of this experience.
The experience is available in EN.
It is a small-group experience with a maximum of 8 participants.
Specialized infant seats are available
Yes, bookings are confirmed instantly.
Travellers rate it 4.6 out of 5 across 120 reviews on Viator and Tripadvisor; it is run by Roundabout Travel.
Reviews collected by Viator and Tripadvisor
Highly recommend these attractions - both are very interesting although the caves are spectacular and shouldn’t be missed. The team at the cave are highly professional, and provide an engaging and interesting tour. Sadly our driver didn’t match these skills and could have provided a better service but I guess his role was just to get us to where we were going which he did safely and comfortably.
Efficient. Convenient. Worth the morning. Ferris was lovely and attentive. Small group. Destinations not too far. Caves and castle amazing
Our tour guide was excellent! Very patient and informative! The tour was outstanding! The best to see in this part of Slovenia 🇸🇮 was without any doubt the Postojna cave and the castle! We loved the experience!!!
Our driver Faris, was excellent. He was very knowledgeable about cave and castle, he told us exactly what would happen and how the trip works. He was friendly, courteous, thoroughly professional and highly informative. I thoroughly enjoyed the ride to and from Ljubljana and listening to what he said. He spoke just the right amount of the time: not too much not too little. I cannot say the same about the tour leader in the cave. She rushed the group and was hard to understand at times. The cave tour was over crowded - seemed merely a money making venture for the owners, and we tourists were treated like cattle. The cave itself was brilliant, but I wish we'd been allowed more time to linger at certain points to take in the phenomena. The castle was highly interesting, also crowded, but tourists could take as much time as they liked while listening to the really good audio guide.
Great tour. Well organized -- the pickup and drop off were exactly as denoted. The tour of the caves and of the castle were spectacular...lots of history and insight from the guides. Highly recommended!!!
It was wonderful with a great tour guide. Had an amazing experience the cave itself is very beautiful amazed how big it was. Definitely worth visiting.
The guide was friendly and kind enough to provide sufficient information about the cave and the castle.
The castle and the caves are spectacular. Unfortunately, on this excursion there is not enough time to be able to see the castle without feeling rushed. They only gave us 1 hour and 15 minutes to visit, eat, go to the bathroom, and take some photos. The castle took more than 1 hour. We barely had time to enjoy how spectacular it is, including the natural environment in which it is located. We didn't even have time to eat something, and we had to choose between taking a photo from the outside, or going to the bathroom. Life is already too stressful to be stressed on vacation too.
Fantastic experience, the castle being the highlight. Loved the caves but possibly a bit too long.
Trip included all costs, including tickets to the cave and castle, and a quite good audio guide for the castle. The guide seemed quite knowledgeable about what to expect during the experiences as well as Slovenian history.
| Tour | Duration | Rating | Price | |
|---|---|---|---|---|
| Postojna cave & Predjama castle half day – all tickets included | 5h 30min | 4.6 (120) | $121 | |
 Postojna Cave and Predjama Castle - Entrance Tickets Included | 6 hours | 4.8 (1,181) | $130 | View |
 Highlights of Slovenia - Postojna & Bled (Tickets included) | 11 hours | 4.9 (87) | $193 | View |
 Postojna Cave and Predjama Castle Trip including entry tickets | 6–7 hours | 4.4 (7) | $164 | View |
 Ljubljana: Postojna cave & Predjama castle small group tour | 5h 30min | 4.8 (174) | $81 | View |
 Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama | 10 hours | 4.9 (947) | $132 | View |
 Postojna Cave with Train Ride and Predjama Castle Half Day Trip from Ljubljana | 5–6 hours | 4.6 (5) | $148 | View |