5 star rating: Highly Recommended 94 Reviews

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  • 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

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

The Mystery of Postojna Cave and Castle Day Tour from Ljubljana

4 star rating: Recommended 3 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 $62.54
$69.49 Save $6.95
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 24 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 $70.58
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 63 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 $78.18
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 $613.48
Postojna Cave and Lake Bled Small-Group Tour from Ljubljana, Ljubljana, Private 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 $107.49
Enchanting Ljubljana and Postojna Cave Small-Group Tour from Zagreb, Zagreb, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Enchanting Ljubljana and Postojna Cave Small-Group Tour from Zagreb

Discover the biggest gems of Croatia’s neighboring country - Slovenia. Start your day with the capital Ljubljana, an enchanting town that will win your heart ...  Read more

Location: Zagreb, Croatia
Duration: 11 hours (approx.)

From USD $152.01
Excursion to Postojna Cave and Predjama Castle from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Excursion to Postojna Cave and Predjama Castle from Ljubljana

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

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

From USD $108.58
Postojna Cave and Predjama Castle Day Trip from Rovinj, Istria, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Day Trip from Rovinj

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

Location: Rovinj, Croatia
Duration: 5 hours (approx.)

From USD $108.58
Postojna Cave and Predjama Castle Day Trip from Koper, Koper, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Day Trip from Koper

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

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

From USD $108.58
Postojna Cave and Lipica Stud Farm Day Trip from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Lipica Stud Farm Day Trip from Ljubljana

The mesmerizing beauty of the Postojna Cave ranks among the most precious jewels of Slovenia. Tour this fantastic subterranean world by miniature electric ...  Read more

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

From USD $107.49

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