Postojna Cave & Predjama Castle from Koper
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
Cruise ship passengers must provide the following information at time of booking: ship name, docking time, disembarkation time and re-boarding time
Hotel guests must advise supplier as soon as possible: hotel details
The temperature inside the cave is constant throughout the year (10 °C), so warm clothing and sports footwear are recommended
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What‘s Included
Driver/guide
Insurance
Hotel/port pickup and drop-off
Food and drinks
Gratuities
Meeting and Pickup
Pickup points
SD Koper Motel Port
Ankaranska Cesta 7 Koper Slovenia
Motel Barka
Ferrarska Ulica 30, Koper Slovenia
Port of Koper
Vodisek Hotel
Kolodvorska cesta 2, Koper Slovenia
What To Expect
Koper
Your guide will pick you up at the agreed starting point in Koper, Slovenia - hotel, cruise terminal, bus station, 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 Koper
Pickup included
Reviews
46 reviews
Total reviews and rating from Viator & Tripadvisor
Great value
Stephanie D,
Nov 11, 2025
- Review from Viator
5.00Half the price if the cruise ship tour, bus full, well organised the tour guide was very informative
A great experience!
Brenda F,
Nov 9, 2025
- Review from Viator
5.00So glad we decided to see the cave and castle!! It was really something to see and experience!! I am glad we were there in a slower season! Our guide was very knowledgeable and also appreciated that she was considerate in helping an older couple who had missed their bus… she let them get in ours and took them to the next stop! Nice to see acts of kindness!
Walk, walk, walk!
Lyn R,
Oct 26, 2025
- Review from Viator
5.00Great excursion but 1 1/2 hours of walking inside cave after tram ride. It is not flat, many incline and declines…need to be comfortable walking in those parameters.
Fun tour of both the cave...
Caryn C,
Oct 20, 2025
- Review from Viator
5.00Fun tour of both the cave and castle! Returned in plenty of time to make our cruise. Would definitely recommend this tour company.
Excellent tour, with enough time provided
markpanama101,
Oct 11, 2025
- Review from Tripadvisor
5.00Dana was very engaging, informative and super helpful for me and the rest of the group. The amount of time at both sites was ideal. The castle was great to explore, as was the cave. The tour provided by the attraction itself for the cave feels hurried, as they are moving all the groups along.
Interesting cave
Colleen B,
Oct 6, 2025
- Review from Viator
5.00Very interesting cave tour. Train takes you part of the way inside the cave and you walk a good portion of the tour. Lots of walking on inclined surfaces.
Amazing & beautiful!
WalterW H,
Sep 25, 2025
- Review from Viator
5.00Words really can’t explain how extraordinary these caves are. Wear a jacket or sweatshirt. The castle was beautiful and the audio guide was easy to use & understand. Make sure to check your tour meeting time the day before. I had written down the wrong time & we missed our ride. Our guide tried to get in touch with us but we didn’t have our phone turned on. We had to take a taxi to get to the caves & meet up with our tour group which made for a stressful beginning. I do think there should be a little more time between the caves & the castle or after the castle before getting in the small bus to return to Koper. Very thankful for the taxi driver who got us to the caves in time to join our tour group so we did not miss out seeing these 2 special places.
Great experience! Must see/do!
Claire W,
Sep 24, 2025
- Review from Viator
5.00Great experience! Dress warmer than you think you should! The train ride in and out of the cave is very chilly. Not recommended for those who struggle to walk long distances or climb stairs. The overall experience was great and well narrated.
Beautiful but Rushed!! Disappointed 😞
Dot L,
Sep 5, 2025
- Review from Viator
3.00The caves are beautiful, however the whole tour was rushed. The train was late getting us in so We were pushed along and not afforded the pleasure of enjoying them. At the end of the walk we were told to point out the fish to the person behind us so we didn't waste time and we were told not to buy anything from the underground post office as there wasn't time and we could buy the same souvenirs from up top. Their running behind schedule shouldnt be the clients problem. They then put us on the train and left us sitting for 10min while they waited for other groups! They seemed very proud that they can push 10,000 visitors through in a day. If you want to enjoy this beautiful site don't go on a tour, take yourself and get an audio guide. The castle was amazing and well worth the visit (self-guided audio)
Koper caves and castle tour
Hazel H,
Aug 19, 2025
- Review from Viator
5.00The caves are sheer magic and breathtaking. Well worth the experience. My only dislike was our group was too big and difficult to hear and stay with guide. Lots of groups there. Slovenia is an impressive country. Only 34 years since it became independent it is beautiful, clean, and felt very safe. Zero unemployment
From €95.90
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