5 star rating: Highly Recommended 52 Reviews

5 star
4 star
3 star
2 star
1 star
  • Location: Ljubljana, Slovenia
  • Duration:  6 hours (approx.)
On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. A two million years old and 21 km long system of subterranean caves is one of the most easily accessible network of underground caves in the world. A ride by electrical train will be followed by a guided walk through a series of cave halls with drop stones, pillars and translucent curtains that create unforgettable impressions. The underworld system is a home of the mysterious, unique and rare amphibian Proteus Anguinus, or human fish as it is popularly called here.


  • 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!

Only 9 km away stands one of the most interesting baroque castles of Slovenia, the Predjama castle. It hangs dramatically in the middle of 123 m high rocky cliff.

Customer Reviews

5 star rating: Highly Recommended August 2014

Lana, our guide, was fabulous. Full of information about the caves, the castle, and Slovenia in general.

Predjama Castle is such a delight. It is one castle that really is just like the travel brochure photos you see of it. When you first see it and the way it is positioned inside the cave, it looks like so ething out of a hollywood movie set. But it is very real, and a total step back in time as you walk through it.

The Postojna Caves are incredible. There are no words to adequately reflect their size and beauty. A visit to these caves is an absolute must when you visit Slovenia. They will leave you in awe of mother nature and the beauty she can create.

5 star rating: Highly Recommended August 2014

Fantastic tour of caves and castle. Tour guide was very friendly and informative

From USD $ 90.87

View price calendar

Low Price Guarantee

Select Travel Date

Flexible Date Guarantee

Enter Total Number of Travelers

(Age 13+)

What's this, and can I change it?

Please note: After your purchase is confirmed we will email you a link to your voucher.
What's this?

Tour code: 3312LJ_POS


Viator uses cookies to improve your experience on our website. Learn more about how we use cookies and how to change your cookie settings | Close message