Tours/Koper/Postojna Cave & Predjama Castle from Koper
Viator · group up to 50 pax

Postojna Cave & Predjama Castle from Koper

4.4(50)Koper1 hour
VIATOR4.4(37)TRIPADVISOR4.2(13)

Description

Visit Postojna Cave, the best-known cave in the world, and The Predjama Castle, the only preserved cave castle in Europe.

Tour Options

Postojna Cave & Predjama Castle from Koper
  • Pickup included

Itinerary

Pass by

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).

Admission included120 min

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).

Admission included120 min

The Predjama Castle reigns over the surrounding area, not far from the Postojna Cave, in the idyllic village of Predjama. This picturesque, magnificent, defiant, mysterious and impregnable castle has been perched up in the middle of a vertical 123-meter high cliff for more than 800 years. Its romantic appeal is further emphasized by the idyllic Lokva River, which disappears into the underground world deep down below the castle. As the only preserved cave castle in Europe, the Predjama Castle offers a unique insight into the building techniques and resourcefulness of people in the Middle Ages, who were looking for and found a safe harbor for themselves right at the entrance into the cave. During a siege that took place in the 15th century, the castle provided a refuge for its best known and most notorious owner - Erazem of Predjama. The legend about the courageous robber baron Erazem, who remained undefeated until one of his servants betrayed him, is still in people’s minds, inspiring and alluring as ever. It was this safe abode of his which helped the brave knight resist the besiegers without much difficulty for more than a year.

Highlights

Driver/guide
Insurance
Hotel/port pickup and drop-off

What's included

Included
Driver/guide
Insurance
Hotel/port pickup and drop-off
Not included
Food and drinks
Gratuities

Pickup Locations & Times

Please advise supplier as soon as possible your pickup details.

Traveller Ratings

4.4
50 reviews
5
37
4
5
3
2
2
2
1
4

Important Information

  • 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

Reviews(50)

S
srabenstine
June 29, 2026
Cave and Castle Exceeded expectations

The cave and castle were great and exceeded our expectations. Take a jacket for the train ride in and out of the cave.

J
John_D
June 28, 2026
Sensory overload

On Time lovely air con Mercedes medium bus. Great clear speaking guide safe bus driver caves and castle. Unbelievably good sensory overload the caves are beautifully cool on a hot day Thanks John

S
SuzyQIndiana
May 26, 2026
A must see! There are lots of stairs in the castle and a lot of walking in the cave, but if you are able I would recommend it.

Online. Comfortable small bus. Good commentary. The cave and castle are absolutely amazing!

R
Ricard_L
May 20, 2026
Refund because tour guide left us.

my tour was scheduled for 9:00 n May 16th. we showed up at 8:30. we kept checking . Received a phone call but when answered no one was there. All the emails still said the tour was still at 9;00 that morning. The tour left us. He said we didnt answer the phone call so they left early. I have used you in the past and never had any trouble. There was no reason to leave early. I want my money back

Operator response

This review is inaccurate. We clearly confirmed the 8:30 AM pickup time through the official Viator messaging system one day before the tour, and you replied: “Okay we will be there.” Our guide waited at the cruise terminal and additionally called twice at 8:52 AM and 8:55 AM without any response. The tour did not leave early - you simply did not arrive for the confirmed departure time, and the group could not be delayed further.

S
Stephanie_D
November 11, 2025
Great value

Half the price if the cruise ship tour, bus full, well organised the tour guide was very informative

B
Brenda_F
November 9, 2025
A great experience!

So 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!

L
Lyn_R
October 26, 2025
Walk, walk, walk!

Great 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.

C
Caryn_C
October 20, 2025
Fun tour of both the cave...

Fun tour of both the cave and castle! Returned in plenty of time to make our cruise. Would definitely recommend this tour company.

M
markpanama101
October 11, 2025
Excellent tour, with enough time provided

Dana 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.

C
Colleen_B
October 6, 2025
Interesting cave

Very 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.

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