Postojna
Cave Tours

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Our most recommended Postojna Cave Tours

From Ljubljana: Postojna Cave & Predjama Castle Tour

1. From Ljubljana: Postojna Cave & Predjama Castle Tour

Admire the stalagmites inside Postojna Cave! Meet your guide in central Ljubljana and settle into your ride as you set out for two of Slovenia’s most enchanting wonders, Predjama Castle and the Postojna Caves. First, go with your guide to the Postojna Caves and uncovers the fascinating world of an unusual amphibian known as the blind salamanders or referred to locally as “human fish”. Explore this enthralling underground world, while your guide explains the geologic forces that created them. Next, head to the Predjama Castle, a storybook castle wedged beneath a dramatic stone archway and against a cliff. Admire the unique Renaissance architecture of the castle located in south-central Slovenia, in the historical region of Inner Carniola. From the castle, enjoy views of lush, rural Slovenia. After that, sit back and relax on your ride back to Ljubljana.

Bled or Ljubljana: Postojna Cave & Predjama Castle Half-Day

2. Bled or Ljubljana: Postojna Cave & Predjama Castle Half-Day

Depart Ljubljana or Bled and journey to the underground world of Postojna Cave, the most popular karst cave in the world. Upon arrival, take a guided tour of the cave system by electric train, and then walk through the beautiful passages and chambers of spectacular drop stones, pillars, limestone curtains and other extraordinary natural wonders. Continue to the idyllic village of Predjama and visit the Renaissance castle built within the mouth of a cave. Admire the fairytale setting and architecture of the medieval fortress of Predjama Castle, famous as the former seat of the knight Erazem Lueger. Marvel at the dramatic setting among the hills of the Inner Carniola region. Learn the legend of Erazem Lueger, a renowned robber baron sometimes referred to as the "Slovenian Robin Hood." Hear other local folk tales and traditions and stop for some local spirit tasting in Postojna, before the journey back to Ljubljana or Bled.

From Trieste: Postojna Cave & Predjama Castle

3. From Trieste: Postojna Cave & Predjama Castle

Postojna Cave, the queen of all caves, 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 (limestone) monuments. This is the only place in the world where the underground landscape can be traversed on an electric train and where you get to meet this underground kingdom’s most famous inhabitant – the proteus (olm) – up close. A fantastic web of tunnels, passages, galleries and halls, astonishing diversity of karst features, as well as easy access are certainly the main reasons for the popularity of the cave and a large number of visitors (more than 36 million of them in over 200 years). The Predjama Castle reigns over the surrounding area, not far from the Postojna Cave, in the idyllic village of Predjama. This picturesque, magnificent, defiant, mysterious, and impregnable castle has been perched up in the middle of a vertical 123-meter high cliff for more than 800 years. Its romantic appeal is further emphasized by the idyllic Lokva River, which disappears into the underground world deep down below the castle. As the only preserved cave castle in Europe, the Predjama Castle offers a unique insight into the building techniques and resourcefulness of people in the Middle Ages, who were looking for and found a safe harbor for themselves right at the entrance of the cave. During a siege that took place in the 15th century, the castle provided a refuge for its best-known and most notorious owner – Erazem of Predjama. The legend of the courageous robber baron Erazem, who remained undefeated until one of his servants betrayed him, is still in people’s minds, inspiring and alluring as ever. It was this safe abode of his which helped the brave knight resist the besiegers without much difficulty for more than a year. Let your guide take you through these unforgettable sights for an ideal day excursion! 

From Ljubljana: Slovenia in One Day Tour

4. From Ljubljana: Slovenia in One Day Tour

You will start your small-group tour with a pickup from your central Ljubljana hotel, and depart for Lake Bled in an air-conditioned minivan. On the 1-hour journey, you can admire rural Slovenia and listen as your guide describes the glacier-formed lake and the legends that surround Bled Island, the church-topped islet in its center. On arrival, you can drink in the views of the lake and towering mountains, and gaze up at medieval Bled Castle, the fortress perched high on a cliff above the water. Then, you will ride a two-oared pletna to the island and enjoy free time to explore, visit the Church of the Assumption of Mary or sample some scrumptious potica at the island cafe. Next, you will be driven up to Bled Castle and can delve inside the red-turreted fortress. Absorb the bird's-eye views of the lakes from the walls and visit the museum to chart the castle’s story from its roots in the 11th century. You will then return to the lakeside for free time to walk around, and if you wish, sample a local specialty, kremšnita vanilla cream cake. Then, after a break for lunch, travel onward to your next stop, Predjama Castle. You can marvel at this remarkable cliffside castle and hear how it was extended through the centuries after being built in 1202. Then, you can choose either to explore its stairways and chambers on your own, or with a guide. Lastly, you will continue to nearby Postojna Cave, Slovenia’s most-visited tourist attraction. Ride the mini-train into the depths of this subterranean network and then follow a guide through its eerie caverns. Ogle the bizarre stalactites, stalagmites, and rock formations and hear tales of how the caves were created and the rare amphibians that live in its underground rivers — the blind salamanders known as 'human fish.' Then, return to your minivan and end your tour in Ljubljana, with a drop-off at your hotel.

From Ljubljana: Postojna Cave & Lake Bled Trip with Tickets

5. From Ljubljana: Postojna Cave & Lake Bled Trip with Tickets

Discover 2 of Slovenia's best natural attractions with a guide. Visit the charming town of Bled with its stunning lake and marvel at the stalagmites inside Postojna Cave. Meet your guide at your hotel in central Ljubljana and settle into your ride as you set out for 2 of Slovenia’s most enchanting natural wonders, Lake Bled and Postojna Cave. First, visit the charming resort town of Bled with its breathtaking lake. Enjoy a sightseeing tour of the best sites with your guide. Take a trip on the emerald green waters of Lake Bled in one of the traditional 'Pletna' boats to discover Slovenia's only island and see if ringing the church bell grants your wishes. Then, enjoy a pleasant stroll around the lake, climb up to the mysterious Bled Castle, or treat yourself to a piece (or 2) of delicious Bled cream cake. Enjoy lunch at a local restaurant before heading to the second natural wonder, Postojna Cave. Enter a mysterious world of underground passages, caverns, and great halls, decorated with dripstones, translucent curtains, and pillars in fascinating shapes and colors. Return into the daylight and discover the astonishing Predjama Castle, the seat of the robber knight Erasmus. Learn about its history from your guide and admire views of lush, rural Slovenia. After that, sit back and relax on your ride back to Ljubljana.

From Koper: 5-Hour Tour to Postojna Cave & Predjama Castle

6. From Koper: 5-Hour Tour to Postojna Cave & Predjama Castle

Enjoy a 5-hour guided tour to the incredible Postojna Cave with a photo stop at the largest cave castle in the world, Predjama Castle. Explore the extensive Postojna cave system with cave passages over 20 kilometers (12 miles) in length on an unforgettable underground train ride.  The Postojna Cave system is the largest known cave system in the country and the second-largest accessible to visitors in the world. Postojna Caves lie under the slopes of a broad karstic limestone plateau on the eastern fringes of the Postojna basin and offer a unique opportunity to spot some of the local wildlife that lives in the cave. Just ten minutes far away from Postojna caves is Predjama castle, another jewel of the Karst region. Predjama Castle pressed into a huge cavern hollowed out of the high, flat rock face, above the karstic swallow hole of the Lokva stream. The castle boasts as the largest cave castle in the world. It is a truly unique sight and will make for an unforgettable sight, not to mention a great photo opportunity.

Rijeka: Postojna Cave and Predjama Castle

7. Rijeka: Postojna Cave and Predjama Castle

Your tour will begin with Postojna Cave, one of the best-known caves in the world. It is also the greatest tourist attraction in Slovenia and one of the world’s largest karst monuments. This is the only place in the world where the underground landscape can be traversed on an electric train and where you can meet this underground kingdom’s most famous inhabitant, the proteus (olm), up close. A fantastic web of tunnels, passages, galleries and halls, astonishing diversity of karst features as well as easy access are certainly the main reasons for the popularity of the cave and a large number of visitors. From here the tour extends to the Predjama Castle which reigns over the surrounding area, not far from the Postojna Cave, in the idyllic village of Predjama. This picturesque, magnificent, defiant, mysterious and impregnable castle has been perched in the middle of a vertical 123-meter high cliff for more than 800 years. Its romantic appeal is further emphasized by the idyllic Lokva River, which disappears into the underground world deep below the castle. As the only preserved cave castle in Europe, the Predjama Castle offers a unique insight into the building techniques and resourcefulness of people in the Middle Ages, who were looking for and found a safe harbor for themselves right at the entrance of the cave. During a siege that took place in the 15th century, the castle provided a refuge for its best known and most notorious owner, Erazem of Predjama. The legend of the courageous robber baron Erazem, who remained undefeated until one of his servants betrayed him, is still in people’s minds, inspiring and alluring as ever. It was this safe abode of his which helped the brave knight resist the besiegers without much difficulty for more than a year.

From Zagreb: Ljubljana, Postojna Cave & Predjama Castle Tour

8. From Zagreb: Ljubljana, Postojna Cave & Predjama Castle Tour

What makes Ljubljana special is not only its cultural heritage, though it was once and still is a place of many great minds. From a traveler's perspective, it is an exceptionally good starting point for exploring Slovenia’s mountains, valleys, seasides, rivers, caves, and forests. It is well connected with other towns and basically halfway to anywhere. The old city center has a unique architectural appearance, particularly due to a felicitous combination of Baroque and Art Nouveau architecture and masterful creations by the 20th-century architect Joze Pleznik. Visit Ljubljana and walk around the city to soak up its vibrant atmosphere. Discover why the Triple Bridge is actually triple, where locals buy their food, how Napoleon was one of the most popular politicians, why Slovenia really lives with LOVE in its name, and much more. From Ljubljana, continue to the Karst region of Slovenia and discover the underground world of Postojna Cave, the most popular karst cave in the world. First, ride an underground electric train into the cave, followed by a guided tour through the beautiful passages and chambers with spectacular drop stones, pillars, limestone curtains, and other unforgettable forms.

From Koper: Postojna Cave and Predjama Castle Tour

9. From Koper: Postojna Cave and Predjama Castle Tour

Benefit from pick-up at the cruise ship terminal in Koper or Piran, and then make your way to Postojna Cave to explore one of the world's largest karst cave formations. Journey through the magical underworld by electric train to discover a fantastic network of passages and halls of astonishing diversity. Keep a look out for the resident olm – an exclusively cave-dwelling aquatic salamander. Continue to the idyllic village of Predjama to explore the imposing castle perched on the middle of a vertical 123-meter cliff. Get stunning views of the Lokva River as it disappears beneath the castle. Learn about the building techniques of the Middle Ages and hear the legend of the castle's most notorious owner, the baron robber Erazem of Predjama! Explore the story of the 15th-century siege and other historical facts about this extraordinary monument and testimony to the resourcefulness of the people of medieval times.

From Ljubljana: Private Postojna Cave & Predjama Castle Trip

10. From Ljubljana: Private Postojna Cave & Predjama Castle Trip

Meet your guide in central Ljubljana and settle into your ride as you set out for two of Slovenia’s most enchanting wonders, Predjama Castle and the Postojna Caves. First, admire the stalagmites inside Postojna Cave and uncover the fascinating world of an unusual amphibian, the blind salamander. You'll explore this enthralling underground world while your guide explains the geologic forces that created them. Next, head to the Predjama Castle, a storybook-worthy castle wedged beneath a dramatic stone archway and against a cliff. Admire the unique Renaissance architecture of the castle located in the historical region of Inner Carniola. From the castle, enjoy views of lush, rural Slovenia. After that, sit back and relax on your ride back to Ljubljana.

Frequently asked questions about Postojna Cave Tours

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What people are saying about Postojna

Overall rating

4.9 / 5

based on 217 reviews

I wasn’t originally going to visit these two sights however I’m so glad that I did!! The guide was super informative. They are both such unique attractions and I would highly recommend all people visiting Slovenia to see them!

The whole tour was amazing and super informative. We had a very comfortable ride there and felt really welcome. The cave and castle was really something to see. Definitely worth the money.

Great trip with plenty of time at each site. Vladimir is a great guide with lots of interesting stories and information. Definitely recommend if you are in Ljubljana!

It was an amazing experience, I definitely recommend!

I unbelievable. A must see for anyone in the area.