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  • Address: Postojna, Slovenia
  • Hours: Daily
  • Admission: Varies

Slovenia ATTRACTIONS See all

Postojna Cave Tours

The Postojna Cave—a subterranean wonderland of karst tunnels, caverns, and galleries, adorned with dramatic stalagmites and stalactites—is one of Slovenia’s most remarkable natural wonders and among the country’s most visited tourist attractions. It stretches along the Pivka River for an impressive 12.5 miles (20 kilometers). 

The Basics
Visitors can discover the underground world of Postojna Cave on a 1.5-hour guided cave tour, which includes a ride on an electric train and an 0.9-mile (1.5-kilometer) hike through cave areas such as  the Great Mountain, the Concert Hall, and the Brilliant Passage. Full-day Postojna Cave tours run from Ljubljana, Koper, and Bled, as well as from Zagreb or Rovinj in Croatia, and are often combined with nearby attractions such as Predjama Castle, Lake Bled, or the Skocjan Caves.

Things to Know Before You Go
  • Guided tours are available in four different languages and audio guides are offered in 17 languages.
  • Temperatures inside the cave average 45–50°F (8–10°C) even in summer, so it’s recommended to bring warm clothing and wear comfortable walking shoes.
  • There is a hotel (Hotel Jama), gift shop, and restaurants onsite.
  • Postojna Cave is accessible for wheelchairs and strollers.

How to Get There
Postojna Cave is located 34 miles (55 kilometers) southwest of Ljubljana, about a 50-minute trip by road. The easiest way to visit is by private car or as part of a guided tour, but it is also possible to arrive by public transport—buses from Ljubljana stop close to the Jama Hotel, while train services connect to Postojna town (1.2 miles or two kilometers away). 

When to Get There
Postojna Cave is open year-round, but the most popular time to visit is between May and October, when tours are held hourly. Winter sees fewer crowds, but it’s best to book ahead as there are sometimes only four interior tours per day.

Highlights of the Postojna Cave Park
After exploring the beautiful caves, pay a visit to the nearby Predjama Castle, the largest cave castle in the world. Then, visit the Proteus Vivarium to discover the large number of animals that dwell in the caves, including the famous olms or “baby dragons.” Other highlights include the EXPO Postojna Cave Karst, an exhibition on the cave’s unique karst landscapes, and adventure tours of the neighboring Pivka Cave and Black Cave.  

Tours & Tickets

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Postojna Caves and Predjama Castle Tour from Ljubljana, Ljubljana, null
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Caves and Predjama Castle Tour from Ljubljana

5 star rating: Highly Recommended 79 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 30 minutes (approx.)

From USD $92.54
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 32 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 $92.54
Postojna Cave and Predjama Castle Day Trip from Koper, Koper, Half-day Tours
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Day Trip from Koper

4.5 star rating: Recommended 6 Reviews

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 $108.80
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: 10 hours 30 minutes (approx.)

From USD $167.57
Postojna Cave and Predjama Castle Small-Group Day Trip from Bled, Bled, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Small-Group Day Trip from Bled

5 star rating: Highly Recommended 2 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: Bled, Slovenia
Duration: 7 hours (approx.)

From USD $121.30
Enchanting Ljubljana and Postojna Caves Small-Group Tour from Zagreb, Zagreb, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Enchanting Ljubljana and Postojna Caves Small-Group Tour from Zagreb

5 star rating: Highly Recommended 5 Reviews

Discover the biggest gems of Croatia’s neighboring country - Slovenia. We start with a drive towards the most visited European cave – Postojna cave, to soak ...  Read more

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

From USD $200.08
Postojna Cave with Train Ride and Predjama Castle Half Day Trip from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

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

5 star rating: Highly Recommended 1 Review

Gems cut out of the rock One cannot visit Slovenia without visiting Postojna Cave, the largest Karst cave in Slovenia with as much as 24 km of fantastic ...  Read more

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

From USD $98.79
Postojna Cave and Castle Small-Group Day Tour from Ljubljana, Ljubljana, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Castle Small-Group Day Tour from Ljubljana

4.5 star rating: Recommended 8 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: 5 hours 30 minutes (approx.)

From USD $90.04
Postojna Cave and Predjama Castle Day Trip from Rovinj, Rovinj, Day Trips
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 3

Postojna Cave and Predjama Castle Day Trip from Rovinj

5 star rating: Highly Recommended 1 Review

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 $125.05
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 $125.05

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