Ljubljana: Postojna cave & Predjama castle small group tour
Overview
Available languages
5 hours 30 minutes
Mobile ticket
Visit two of Slovenia’s top attractions in one afternoon on this small-group, half-day tour from Ljubljana. Begin at Predjama Castle, perched on a cliff high above the beautiful Inner Carniola region. Explore the chambers and stairwells and learn about the castle’s most famous resident, Erazem of Predjama. Then, continue to Postojna Cave. Ride a mini-train deep into the famous cave and tour the ethereal network of stalactites, stalagmites and caverns with a local guide. Numbers limited to eight people, ensuring a personalized experience.
Postojna Cave 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 and it is a must-see attraction when visiting Slovenia. You will start the tour with a unique and adventurous ride with a special train in one of the most diverse cave systems in the world, with 21 km of passages, galleries and magnificent halls, which offer an unparalleled experience of the underground world and a large diversity of underground animals – including the world-famous human fish (proteus anguinus). Beside Postojna Cave you will also have the chance to visit Predjama Castle. Our guide will show you this magnificent medieval castle perched high up in a vertical cliff in the idyllic village of Predjama. It is an interesting and romantic sight throughout the year: in the spring and summer its surroundings are abundant with blossoms and flowers, in the autumn it is clad in the colours of surrounding forests and it is at its most enchanting in the winter when the surrounding area is covered in snow.
Additional Info
Travelers should have at least a moderate level of physical fitness
Minimum numbers apply. There is a possibility of cancellation after confirmation if there are not enough passengers to meet requirements. In the event of this occurring, you will be offered an alternative or full refund.
Not wheelchair accessible.
Please keep in mind that there are quite a few stairs at the Predjama castle, but you would do that in a fairly slow pace.
Small group tour - up to 8 people per van.
Warm and comfortable clothes and footwear are essential to visit the Postojna cave (temperature in the cave is 9°C / 48 Fahrenheit).
What To Expect
Predjama Castle
Tour of Predjama Castle
Postojna Cave
Tour of Postojna cave
Options
Small group tour - max 8 people in the van
What‘s Included
Central Ljubljana meeting point
Comfortable transport by air-conditioned minivan
Professional English speaking guide
Postojna Cave & Predjama Castle combined ticket: from 45 € per person (dynamic prices)
Postojna cave only: from 33 € per person
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
Reviews
167 reviews
Total reviews and rating from Viator & Tripadvisor
Not much included for the cost, but still worth it!
D4734MJmichaelac,Jun 2, 2026
- Review from Tripadvisor
5.00While this is essentially paying for a ride to the caves and castle, it is still worth booking (the tickets for the actual caves and castle are NOT included, and the driver/guide does NOT come with you into the caves or castle). The van was very comfortable and our driver was knowledgeable (gave us information during the drive and outside of the castle), helpful, and well-organized. Again, the caves are so incredible I still think this is worth booking if you want to travel comfortably.
Prompt pickup. Friendly,...
Jonathan H,May 28, 2026
- Review from Viator
5.00Prompt pickup. Friendly, organised and informative guide. The caves are particularly touristy but are well organised and therefore still worthwhile. some more elderly tourists struggled a little with the walk at the caves and the steps at the castle. We found the castle, particularly interesting but at peak season, I would imagine it is chaotically busy.
Luka was a knowledgeable...
Stefan N,May 19, 2026
- Review from Viator
5.00Luka was a knowledgeable guide with lots of interesting facts to share. The caves were fascinating, and the castle breathtaking.
Perfect 1/2 Day
canjapam,May 15, 2026
- Review from Tripadvisor
5.00We were excited to see Predjama Castle and the Postonja Cafes but we didn’t want to take up our entire day doing so. This was perfect. 8:20 pick up and 2pm drop off. Jan was an excellent guide and made everything seamless.
Great experience. The...
Richard B,May 12, 2026
- Review from Viator
5.00Great experience. The caves are stunning. The castle is truly one of a kind. Unique. Our driver/guide is wonderful.
Fantastic.
stefanov231,Apr 10, 2026
- Review from Tripadvisor
5.00Exciting experience and immersed in. Really great caves. Recommended.
Nice visit
DiBi76,Jan 1, 2026
- Review from Tripadvisor
4.00It is a very interesting cave, the largest in Europe. Part of the visit is carried out with a train, followed by a pleasant walk. Beautiful rooms, the magnificence of nature. In the surroundings you can make a pleasant stop to eat.
Great half day adventure...
Michael M,Nov 15, 2025
- Review from Viator
5.00Great half day adventure with an astonishing cave and an equally impressive castle IN a cave. Nina both drove and lead the group with aplomb. It's a great way to get out of the city and see some things (for me at least) not easily seen at home.
Postojna Cave & Predjama Castle … a great experience
jamiec265,Nov 15, 2025
- Review from Tripadvisor
5.00A fantastic day at the Postojna caves and Prediama Castle. The minibus was very comfortable and our guide, Thea, was extremely professional, knowledgeable and a lovely person. The tour was great value and a great use of our precious time in Slovenia. I would recommend this tour to all.
Amaizing
Werner W,Oct 26, 2025
- Review from Viator
5.00It is a Must to go there, we have Seen many Caves, but this is by far the most Impressive cave and well organised
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Operated by Gray Line Slovenia I Slovenia Explorer