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Postojna Caves and Predjama Castle Tour from Ljubljana

Ljubljana, Slovenia
Book online or call: (888) 651-9785(888) 651-9785

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6 hours 30 minutes (Approx.)
Hotel pickup offered
Mobile ticket
Offered in: English


Explore the fascinating network of subsurface caves during a guided tour of the Postojna Caves and Predjama Castle, leaving from Ljubljana. As you enter the two million year old caves aboard a mini-train, you will learn about why this is one of Slovenia’s most popular attractions. You’ll walk with your guide and witness bizarre stalactites, stalagmites and other rock formations that make up the 13-mile-long (21 km) system of underground caves. You’ll also venture to the enchanting Predjama Castle, a famous castle that still clings to Slovenia’s limestone cliffs.
  • Travel along the biggest Slovenian cave systems
  • Ride by electrical train through majestic cave halls
  • Learn about the caves 'underworld system'
  • See one of the most interesting baroque castles
Meet your guide in central Ljubljana and settle into your ride as you set out for two of Slovenia’s most enchanting wonders, Predjama Castle and the Postojna Caves. First, go with your guide to the Postojna Caves and uncovers the fascinating world of an unusual amphibian known as the blind salamanders or referred to locally as “human fish.” Explore this enthralling underground world, while your guide explains the geologic forces that created them.
Next, head to the Predjama Castle, a storybook castle wedged beneath a dramatic stone archway and against cliff. Admire the unique Renaissance architecture of the castle located in south-central Slovenia, in the historical region of Inner Carniola. From the castle, enjoy views of lush, rural Slovenia.
After that, sit back and relax on your ride back to Ljubljana.

Traveler Photos


134 Reviews
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Reviews by Viator travelers
Stunning Caves and fascinating Caste
, Jun 2019
We went from Ljubljana to the caves and then on to the castle before returning to Ljubljana in all around 6 hours starting at 8.30. The tour delivered on everything it said it would but on top of that our guide (Barbara L) was excellent. She pointed out place of interest while we travelled and provide an entertaining insight as to the history of the country and general life there. The cave, with its train access and walking element of about a mile was a great experience. The nearby castle (15 mins by transport) was an interesting self guided audio tour that took about an hour. I would highly recommend the To Do in Slovenia tour we took with Barbara L.
Great way to visit !
, Jun 2019
I decided to join this tour as there is limited transportation between Postojna Caves and Predjama Castle (except in summer). I was not willing to splurge on taking a cab both ways or driving a car. The decision has worked out well. Our guide Barbara K. is very informative about Slovenia and especially punctual (she was 20 minutes early for the pickup). The tour provides the opportunity to experience 2 wonderful attractions on the same day.
Great Tour
, Jun 2019
Our tour of Postojna caves and Predjama Castle was lovely. Our tour guide on the drive and throughout, Tadeja, was wonderful. She was engaging, informative and interesting. She did a great job!
Sarah S
, Jun 2019
Fantastic trip. Driver was very friendly, organised and knowledgeable. Both locations are well worth visiting! Just amazing!
Sights close to the capital
, Jun 2019
Good email communication prior to tour. Great guide, Ziga Ivanc, who discussed Slovenian history and sights in both English and Spanish to the 6 of us on the tour. Ziga organised our tickets at the caves and castle and also took us to a great local ice cream shop on the way back to Ljubljana. Caves and castle both amazing and not to be missed!
Excellent, informative, fun!
Srushti G
, May 2019
My Mother and I were visiting Ljubljana for a conference and had two days prior to that to travel the caves... We found this tour on viator and immediately took to it... We booked it hoping for the best.. And our hopes were beyond fulfilled... The host, Barbara came to pick us up at our airbnb despite it not being in the list of pickup spots... She was there little before time, which was impressive and helped us have an early start to the trip.. We picked up five other people joining us and started the way to the caves... Throughout the journey, Barbara was informing us about Ljubljana and Slovenia and we enjoyed a stimulating conversation on the same... She is an economist and thus knew a lot about the economy, trades, gdp etc of the country... The way she explained the history of Slovenia was extremely interesting and even a person like me who is usually scored least in history in school, was at the edge of my seat listening to her version of the story.. She gave several tips on the caves and castle.. The caves were brilliant, and the guide there was very good... It's important to stay close to the guide so you don't miss any of the fascinating details about the cave... The castle had an audio guide and was another worthwhile visit... I won't spoil the mystery by telling you details about the caves and castle, but they're a must see! We both recommend this tour and Barbara as a host! Thank you!
Cool Caves Literally and Figuratively
, May 2019
The cave tour was excellent. The formations in the caves were really interesting and the train ride in the caves was fun. The castle makes for a beautiful photo op and the history behind it is interesting but I have been to a lot of castles that are much more interesting to tour. I works wells as a combined tour and I definitely recommend the tour.
Caves definitely worth a visit
, Apr 2019
The visit to the caves was great well coordinated by the guides. The castle was not exactly what I expected and could’ve have probably given this a miss. It was great being picked up and dropped from our hotel
Very Interesting
, Apr 2019
Postojna Caves is very amazing. Total 25km, but we just visited 5km, 3km by train and 2km walk. The tour guide is very knowledgeable and friendly.
Natural wonder .
, Aug 2018
Amazing natural wonder .not to be missed .best of all the similar caves I have seen .very well organised .

Product code: 3312LJ_POS

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