5 star rating: Highly Recommended 90 Reviews

Add your review

  • Address: Postojna, Slovenia
  • Hours: Open Daily with tours at 10am, 12pm, & 3pm; more frequent tours in summer
  • Admission: Adults: € 20, Children (6-15yrs): € 12

Slovenia ATTRACTIONS See all

Postojna Caves

The Postojna Cave system is Slovenia's most popular tourist attraction, and within an instant of arriving, it is clear why. The cave, formed by the Pivka River, is a 20 km (12.5 mi) long karst cave, and is the most visited cave in Europe. Enter a different world in these incredible caves, and prepare to be impressed.

Your journey begins with a 2 km (1.2 mi) ride into the caves, which is a thrilling experience in and of itself. See stunning stalactites, stalagmites, calcite, and other incredible geological formations, as well as a wealth of wildlife. 

The caves are home to the olm, a salamander-like animal that lives only in these specific caves. There are also many different kinds of insects and other amphibians that are unique to cave environments. The caves also feature an incredible concert hall, famous for its unique acoustical values. The hall can seat up to 10,000 people, and is frequented by symphony orchestras and soloists.

Practical Info

The caves are located about 40 minutes out of Ljubljana, and are accessible by car. Parking is available for a daily fee. If you are without a car, there are shuttle, bus, and train services from Ljubljana. 

The tour includes a walking portion of about 1 km (0.75 mi), so be sure to wear sensible shoes. Also be aware that it can be slightly chilly in the cave, so appropriate clothing is advisable.

Tours & Tickets

See all

The Mystery of Postojna Cave and Castle Day Tour from Ljubjana, Ljubljana, null
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 1

The Mystery of Postojna Cave and Castle Day Tour from Ljubjana

4 star rating: Recommended 21 Reviews

You will discover the underground world of Postojna Cave which is the most popular karst cave in the world. The guided tour will consist of a journey by ...  Read more

Location: Ljubljana, Slovenia
Duration: 7 hours (approx.)

From USD $73.08
Predjama Castle and Postojna Cave Tour from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Predjama Castle and Postojna Cave Tour from Ljubljana

5 star rating: Highly Recommended 147 Reviews

Visit two of Slovenia’s top attractions in one afternoon on this small-group, half-day tour from Ljubljana. Begin at Predjama Castle, perched on a cliff high ...  Read more

Location: Ljubljana, Slovenia
Duration: 5 hours (approx.)

From USD $74.23
Postojna Caves and Predjama Castle Tour from Ljubljana, Ljubljana, Half-day Tours
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Caves and Predjama Castle Tour from Ljubljana

5 star rating: Highly Recommended 378 Reviews

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 ...  Read more

Location: Ljubljana, Slovenia
Duration: 6 hours (approx.)

From USD $82.22
Full-Day Private Tour: Postojna Cave from Zagreb, Zagreb, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Full-Day Private Tour: Postojna Cave from Zagreb

Postojna is definitely one of the most interesting destination in Europe. It is most famous due to its aquatic salamander, only exclusively cave-dwelling ...  Read more

Location: Zagreb, Croatia
Duration: 8 hours (approx.)

From USD $645.20
Postojna Cave with Train Ride and Predjama Castle Day Trip from Ljubljana, Ljubljana, Private Day ... 
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave with Train Ride and Predjama Castle Day Trip from Ljubljana

5 star rating: Highly Recommended 6 Reviews

A unique karst experience of the underground world, a forest of limestone mother nature sculptured. You drive into the cave by a special little train like no ...  Read more

Location: Ljubljana, Slovenia
Duration: 5 hours (approx.)

From USD $90.21
Postojna Cave and Lake Bled Small-Group Tour from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Lake Bled Small-Group Tour from Ljubljana

You will visit two of Slovenia's most known sights in one day: the mesmerizing beauty of Postojna Caves with the mysterious Predjama castle and the fairytale ...  Read more

Location: Ljubljana, Slovenia
Duration: 11 hours (approx.)

From USD $113.05
UNESCO Skocjan Caves and Karst Wine and Food Day Trip from Ljubljana or Bled, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

UNESCO Skocjan Caves and Karst Wine and Food Day Trip from Ljubljana or Bled

Visit world-known UNESCO Skocjan Caves and enjoy in tasty gourmet experience with fantastic wine in Karst region.

Location: Ljubljana, Slovenia
Duration: 8 hours (approx.)

From USD $137.03
Postojna Cave and Predjama Castle Bike Tour from Ljubljana, Ljubljana, Wine Tasting & Winery Tours
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Bike Tour from Ljubljana

Slovenia’s grandest natural miracles. The country’s most visited site and one of the most fascinating castles. Postojna Cave is the most prominent of ...  Read more

Location: Ljubljana, Slovenia
Duration: Flexible

From USD $210.12
Postojna Cave and Predjama Castle Tour from Bled, Bled, Bike & Mountain Bike Tours
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Postojna Cave and Predjama Castle Tour from Bled

Visit the biggest classic Karst cave in the world. Experience the breathtaking cave on-board the cave train. See the world famous Human Fish, an elusive animal ...  Read more

Location: Bled, Slovenia
Duration: 6 hours (approx.)

From USD $67.38
Slovenia in One Day: Small-Group Day Trip to Lake Bled, Postojna Cave and Predjama Castle from ... 
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 3

Slovenia in One Day: Small-Group Day Trip to Lake Bled, Postojna Cave and Predjama Castle from Ljubljana

5 star rating: Highly Recommended 518 Reviews

Discover three of Slovenia’s top attractions in one day on this scenic small-group day trip from Ljubljana. Marvel at beautiful Lake Bled and ride a ...  Read more

Location: Ljubljana, Slovenia
Duration: 10 hours 30 minutes (approx.)

From USD $135.89

See all

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