Visit our Ljubljana destination hub for day by day itineraries, top things to do in Ljubljana and more!

Postojna Cave is a 24,340 m long karst cave system near Postojna, southwestern Slovenia. It is the second-longest cave system in the country as well as one of its top tourism sites. The caves were created by the Pivka River. Wikipedia


Key Highlights (Beta)

Things To Do (26)

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

Top Rated
Postojna Cave, Ljubljana

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 traditional ‘pletna’ boat to Bled Island to explore and perhaps try scrumptious ‘potica’ nut cake. Then, explore Bled Castle perched above the lake before free time for lunch. Finally, visit cliffside Predjama Castle and ride a mini-train into Postojna Cave, the famous cave network of stalactites, stalagmites and eerie halls.  Visit the main tourist sights in one day and enjoy a magnificent day exploring some of the best Slovenian attractions. On our tour we treat you with a traditional pletna boat ride to Bled island and visit the only Slovenian island. On the island you can enter the Church of the Assumption and even ring the wishing bell, which has been ringing over Lake Bled since 1534. After the pletna boat ride you will explore a thousand years old Bled castle, which is also one of the most spectacular castles in Slovenia. You visit also the castle museum, which gives you an insight into the history of the entire area. Take a few minutes to admire the amazing views of Lake Bled from several viewpoints at the castle.  In the afternoon explore some underground attractions. Visit Postojna Cave, the best-known cave in the world and one of the largest Karst monuments. Start the adventure with a unique ride with a special train that will take you to discover galleries and magnificent halls full of interesting stalactites, stalagmites and the most famous cave animal human fish (proteus anguinus). A scenic road will take us to idyllic village of Predjama where we will explore one of the most interesting castles in Slovenia, The Predjama Castle. It is perched high up in a vertical cliff and it has been placed on lists of top 10 castles to see in the world. Erazem of Predjama (Erasmus) is the main protagonist of numerous legends – on the one hand these legends glorify him as a passionate, handsome and noble knight, while on the other he is described as a bandit and a robber baron who met his death on the toilet.  

Free Cancellation
Covid Safety Measures
from 98
Buy Now

Predjama Castle and Postojna Cave Tour from Ljubljana

Top Rated
Postojna Cave, Ljubljana

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 above the beautiful Inner Carniola region. Explore the chambers and stairwells and learn about the castle’s most famous resident, Erazem of Predjama. Then, continue to Postojna Cave. Ride a mini-train deep into the famous cave and tour the ethereal network of stalactites, stalagmites and caverns with a local guide. Numbers limited to eight people, ensuring a personalized experience.  Postojna Cave is the best-known cave in the world. It is also the greatest tourist attraction in Slovenia and one of the world's largest Karst monuments and it is a must-see attraction when visiting Slovenia. You will start the tour with a unique and adventurous ride with a special train in one of the most diverse cave systems in the world, with 21 km of passages, galleries and magnificent halls, which offer an unparalleled experience of the underground world and a large diversity of underground animals – including the world-famous human fish (proteus anguinus). Beside Postojna Cave you will also have the chance to visit Predjama Castle. Our guide will show you this magnificent medieval castle perched high up in a vertical cliff in the idyllic village of Predjama. It is an interesting and romantic sight throughout the year: in the spring and summer its surroundings are abundant with blossoms and flowers, in the autumn it is clad in the colours of surrounding forests and it is at its most enchanting in the winter when the surrounding area is covered in snow.   

Free Cancellation
Covid Safety Measures
from 51
Buy Now

Bled Lake with Postojna Cave & Castle - small group - day trip from Ljubljana

Top Rated
Postojna Cave, Ljubljana

Enjoy the visit to the glacial Lake Bled, the Slovenian Karst at Postojna Cave and a tour of the fairy-tale medieval Predjama Castle on a day trip from Ljubljana. Included in the tour: local bites tasting in Bled and local spirits tasting in Postojna (available from April 1st).

Free Cancellation
Covid Safety Measures
Likely To Sell Out
from 89
Buy Now

Postojna Cave and Castle Small-Group Day trip from Ljubljana

Badge of Excellence
Postojna Cave, Ljubljana

You will discover the underground world of Postojna Cave, the most popular karst cave in the world. The guided tour will consist of a journey by electrical train and will be followed by a walk through beautiful chambers and passages with spectacular drop stones, pillars, limestone curtains and other unforgettable formations. Continue to the idyllic village of Predjama where you will be amazed by the fairy-tale medieval Predjama Castle with its dramatic setting in the gaping mouth of a cavern, halfway up a hillside. Learn about the legend of the famous Erasmus – ‘Slovenian Robin Hood’, stop for local spirits tasting in Postojna (available from April 1st) and return back to Ljubljana.

Free Cancellation
Covid Safety Measures
from 52
Buy Now

Postojna Cave & Predjama Castle with tickets - Small Group Shore Tour from Koper

Top Rated
Postojna Cave, Ljubljana

Wonderland Does Exist Join us on this small group shore excursion journey to the world`s famous Postojna Cave and fairytale Predjama Castle in a comfortable, clean, air conditioned up to date passenger van or minibus for up to 15 persons max. In this tour all the tickets (Postojna Cave and Predjama Castle) are included in the price as "skip the line" option. Definitely one of the best options to experience Slovenia. Highlights: - Small Group Tour (up to 8) - Adventureus Ride with only Cave Train in the World - Biggest Cave System in Europe and a Fairytale Castle - Comfortable, Clean and Air- Conditioned up to date cars/vans - Foodie Insiders- We Know Where to get Local Food at its Best

Free Cancellation
Covid Safety Measures
from 120
Buy Now

Travel Videos (20)

Top 20 Things to Do in LJUBLJANA, SLOVENIA + DAY TOURS (Part 1)

We got stranded in Ljubljana. But it turned out to be a great thing! In this video, we'll show you some of the best things to do and ...

August 31, 2021

Discover the Best Caves in Slovenia! (The Perfect Day Trip From Ljubljana)

Discover 3 of the best caves in Slovenia! These caves are true wonders that can be seen on a day trip from Ljubljana. In this video ...

February 19, 2022

10 Things to do in Ljubljana, Slovenia Travel Guide

Join as we visit Ljubljana, Slovenia in this travel guide covering some of the best things to do in the city including highlighting the ...

December 2, 2017

LJUBLJANA, Slovenia - Things To Do (TOP 10)

Things To Do In LJUBLJANA, Slovenia. Ljubljana Top 10 Travel Guide. I'm Rok and I've spent last 8 years travelling around ...

December 11, 2020

Ljubljana: What NOT to Do in Ljubljana, Slovenia

The don'ts of visiting Ljubljana, Slovenia. Ljubljana is the capital of the gorgeous country of Slovenia that a number of tourists miss ...

March 20, 2021

Pearl Of Alps! - LAKE BLED, Slovenia (Things To Do)

Things To Do In LAKE BLED, Slovenia. Pearl of Alps and the most Beautiful Place in Slovenia. Lake Bled is one of the most ...

July 8, 2021

Postojna Cave (Ljubljana Day Trip)

One of Gordana's good friends told me that if I'm going to visit Slovenia I have to visit Postojna - more specifically Postojna Caves.

February 7, 2019

Slovenia's Top 8 Places to Visit!

Slovenia, is truly Europe's best kept secret. Their motto - You cannot spell Slovenia without Love , and I have to say, I absolutely ...

May 22, 2022

Top 10 Places To Visit In Slovenia - Travel Guide

Slovenia is easily one of the most underrated countries in Europe! Enjoy this travel guide across Slovenia's spectacular terrain.

February 4, 2022


When we look back and think about our time in Slovenia, we can't help but smile. Of all the countries we visited on our most recent ...

August 28, 2021

What Bloggers Are Saying (67)