Postojna Cave and Predjama Castle - Entrance Tickets Included
Overview
Available languages
6 hours
Mobile ticket
On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible networks of underground caves in the world. First, you will experience the ride by electric train, after that, a guided walk will follow through a series of cave halls with drop stones, pillars, and translucent curtains that create unforgettable impressions. The underworld system is home to the mysterious, unique, and rare amphibian Proteus Anguinus, or "baby dragon" as it is popularly called here.
Back in the daylight, the trip will continue towards the astonishing castle of the robber knight Erasmus. For centuries dramatically hanging in over a 100-meter-high vertical cliff, it's waiting for you to enter and discover its secrets, legends, and myths.
Driving through the green scenery, we return to Ljubljana.
Additional Info
Public transportation options are available nearby
Specialized infant seats are available
Suitable for all physical fitness levels
There is a constant temperature of 10°C (50°F) in the caves, dress properly, and wear comfortable shoes (flipflops are not recommended).
The minimum number of participants must 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 date/tour or full refund.
In case you fail to provide us with a desired meeting point up until 24h before departure, your meeting point will be the City hotel (Dalmatinova 15, 1000 Ljubljana)
Child rate applies only when sharing with 2 paying adults.
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What To Expect
Postojna Cave
Postojna cave entrance fee
Predjama Castle
Predjama Castle entrance fee
What‘s Included
Entrance to Postojna cave
Pick up and drop of service in central Ljubljana
Entrance to Predjama Castle
Audio guide in Predjama Castle
Skip the line service
Air-conditioned vehicle
English Speaking Driver/Guide
Food and drinks
Your personal expenses
Pickup points
Intercontinental Ljubljana By IHG
Slovenska cesta 59 Ljubljana Slovenia
City hotel
Dalmatinova ulica 15, Ljubljana Slovenia
Options
SHARED TOUR
Book your Shared Group Tour to Postojna Caves and Predjama Castle from Ljubljana
Pickup included
Reviews
947 reviews
Total reviews and rating from Viator & Tripadvisor
JC Postojna Cave tour
Jason C,Mar 13, 2026
- Review from Viator
5.00The Postojna Cave is beyond amazing, which is one of the best places that I have ever visited. Once you see it you would never forget it. We are lucky as the weather was good and there were very few tourists around. Our tour guide is great, he made our trip easy, smooth, and fun. This is one of the a few best trips that I have booked with Viator. Highly recommend.
Good quality service
blood97,Mar 9, 2026
- Review from Tripadvisor
5.00I did have a really good experience and I consider this service of high quality. Igor was on time and provided explanations and suggestions on the way there and on the way out. Everything was well organized and exceeded my expectations. I highly recommend.
Very interesting places, awful ride
Ruth N,Mar 9, 2026
- Review from Viator
4.00Postojna Cave and Predjama castle were both very interesting places and I enjoyed them very much. I gave to this trip 4 points because the ride was in an extremely uncomfortable minibus. The front seat next to the driver is a slightly wider seat than a regular seat. It`s too narrow for two (stranger) adults. Luckily I didn`t sit in the middle, there`s not enough legroom for an adult person there either. This front seat would fit an adult with a child but the two children on the trip sat in the back on normal seats. The price for this uncomfortable seat should have been cheaper than the others.
It was quite fun, good...
Mason H,Mar 6, 2026
- Review from Viator
5.00It was quite fun, good tour guide/driver. The caves in particular are very cool, and you can buy a stuffed human fish at the gift shop.
Stunning
935nicola,Mar 4, 2026
- Review from Tripadvisor
5.00It was stunning and worth the trip from the capital. We didn’t choose expensive trips, we just hoped on a local bus for 30 euros (for 2) Absolutely worth the admission fee.
Very well worth it
Deivide p,Mar 3, 2026
- Review from Viator
5.00The caves are beautiful and the castle absolutely unique, the guide was very kind, it is really a must-see tour.
Worth a visit
Rachel W,Mar 3, 2026
- Review from Tripadvisor
5.00Really worth a visit - really fun train ride in the caves and the castle was really interesting to walk around
Amazing!
649melaniet,Feb 19, 2026
- Review from Tripadvisor
5.00A really excellent trip well worth the money! The castle was fascinating and the caves are like something out of a fairy tale. A must-see.
Solo trip
georginapQ584MC,Feb 3, 2026
- Review from Tripadvisor
5.00Great experience, the caves and the castle were amazing to see and explore. Had a great tour guide and would fully recommend this!
Amazing
NURSEL T,Jan 30, 2026
- Review from Viator
5.00This trip, encompassing Postojna Cave and Predjama Castle, was truly impressive. The organization was impeccable; timing, transportation, and directions were seamless. The initial train ride through Postojna Cave, followed by the hiking portion, was unforgettable. The cave's size and natural formations are awe-inspiring. Visiting Predjama Castle, built into the rocks, was the perfect culmination of the trip. It's a truly impressive place, both historically and geographically. The guide's explanations were clear and comprehensive. I highly recommend it for anyone wanting to see a lot in Slovenia in a short time.
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Operated by To do in Slovenia