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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

Recent Photos of This Tour

What You Can Expect

Postojna Caves and Predjama Castle Tour from Ljubljana

Admire the stalagmites inside Postojna Cave!

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.

Customer Reviews

Joahnna Luisa B

5 star rating: Highly Recommended January 2017

Both sights are must sees for different reasons perhaps but worth the visit.

Erlina K

5 star rating: Highly Recommended April 2016

We loved this tour. Postojna Cave is beautiful and easy to go thru especially with young children. Predjama Castle is special, very different than other castle we have seen of course and our guide was very knowledgable.

zaikang l

5 star rating: Highly Recommended September 2015

It was great. We had a really wonderful time. The driver was on time and helpful. We recommend potential visitors to use the service you provided.

Debra M

5 star rating: Highly Recommended June 2015

The tour of Postojna caves was a highlight of holiday and is a must, must see as these are the best caves in the world. Small group tour with a very good guide/driver. Highly recommend this tour if in Slovenia. Do not miss.


5 star rating: Highly Recommended May 2015

The tour has been great! We have seen very interesting and beautiful places. The guide Vladimir has been great as well. He has told historic issues with a good sense of humour, which has been quite interesting and fun. Thank you! Highly recommend.

Antonio S

5 star rating: Highly Recommended October 2014

Excellent.I loved it

Josh P

5 star rating: Highly Recommended September 2014

Our guided tour of Postojna Caves and Predjama Castle was fantastic. Our guide Vladimyr promptly picked us up from our hotel in Ljubljana and immediately made us feel welcome in Slovenia by sharing a bit about himself and why he chooses to lead these tours. He ensured we got the most of our tour and was incredibly knowledgeable about the Caves, Castle, and Slovenia in general. We had a great time and highly recommend visiting this tour for ease, learning, and fun.


5 star rating: Highly Recommended September 2014

The tour guide is very friendly and informative.
He told us a lot of history about the Predjama Castle.
And Postojna Caves just amazing.


5 star rating: Highly Recommended September 2014

amazing castle and views

Emma C

5 star rating: Highly Recommended September 2014

Fascinating places. I've never visited such long spectacular caves before and what a good idea to have an open air train running through them. Take a warm jacket though because the temperature in there is 10 degrees (all year around). I loved Predjama Castle too, made even more interesting by our legendary and entertaining guide, Vladimir.

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