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Notranjsko-kraška

Postojna

Top 3 Castles around Postojna

Best castles around Postojna are primarily characterized by their unique integration with the natural landscape, particularly the dramatic karst topography. The region is known for its cave systems and historical fortifications built into or near these geological features. Postojna serves as a gateway to exploring these architectural and natural marvels, offering insights into medieval history and engineering. The area's landscape provides a backdrop for exploring these historical sites.

Best castles around Postojna

  • The most popular castles is Predjama Castle, a castle built into a rock face with restored living quarters, dungeons, and a secret tunnel. Recognized by Guinness World Records as the largest cave castle, it seamlessly integrates with its natural surroundings.
  • Another must-see spot is Planina Cave, a cave system where two underground rivers meet. Visitors can observe the confluence of the Pivka and Rak rivers, forming one of Europe's largest underground river junctions.
  • Visitors also love Linden Tree of Erasmus of Predjama, a historical natural monument associated with the legend of Erasmus. It marks the burial site of Erasmus and is a significant part of the local lore surrounding Predjama Castle.
  • Postojna is known for its cave castles and historical natural monuments. The region offers a variety of historical sites to see and explore, often connected to unique geological formations.
  • The castles around Postojna are appreciated by the komoot community, with more than 230 upvotes and over 420 photos shared by visitors.

Last updated: October 5, 2026

Predjama Castle

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13th-century cave castle built into a rock face with restored living quarters, dungeons and secret tunnel.

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Planina Cave

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right under our feet the Pivka reappears after having sunk near Postojna. In the winter period the view of the intermittent Planina lake is very beautiful

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Linden Tree of Erasmus of Predjama

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Lipa Erazma Predjamskega - Lime tree planted on the grave of Erasmus. You can find out more about this in the cave castle predjama.

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Popular around Postojna

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Tips from the Community

Viaggiatore Lento
March 23, 2025, Planina Cave

right under our feet the Pivka reappears after having sunk near Postojna. In the winter period the view of the intermittent Planina lake is very beautiful

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The legend tells that Polissena, Erasmus's lover, buried Erasmus near the small church in front of the Predjama Castle, planting a lindem tree which is still standing today.

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Lipa Erazma Predjamskega - Lime tree planted on the grave of Erasmus. You can find out more about this in the cave castle predjama.

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A fantastic very interesting castle. Audio guides available in many languages. I got so many impressions, it was just wonderful. As a visitor, you can go almost all the way to the top of the castle. Not cheap but definitely worth it.

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13th-century cave castle built into a rock face with restored living quarters, dungeons and secret tunnel.

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It is fascinating to see how a castle was built into a rock. Definitely an experience. Definitely worth a trip.

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The castle is very beautiful and well worth seeing. However, you should wear sturdy shoes

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Germännle
October 9, 2022, Planina Cave

The Planina Cave (Slovenian: Planinska jama), formerly also the Small Castle Cave (Malograjska jama) after the Small Castle near its entrance, is one of the longest Slovenian water caves. It is a huge tunnel and the underground bed of the Unica River. It is located in Inner Carniola. Five hundred meters from the entrance to the cave, two underground rivers meet: the Pivka River, which flows from Postojna Polje through the Postojna Cave, and the Rak River, which flows from Rak Škocjan through the Weaver's Cave to the Planina Cave. This is one of the largest confluences of underground rivers in Europe. (Source Wikipedia)

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Frequently Asked Questions

What makes Predjama Castle unique?

Predjama Castle is renowned for its dramatic setting, built directly into the mouth of a giant cave, halfway up a 123-meter cliff. Recognized by Guinness World Records as the largest cave castle, its unique construction seamlessly integrates with the natural rock face. Visitors can explore its various rooms, armory, chapel, and even a torture chamber, all while learning about its fascinating history and legends, particularly that of the robber baron Erazem Lueger.

What historical legends are associated with Predjama Castle?

The castle is famously linked to the 15th-century robber baron Erazem Lueger, often called Slovenia's Robin Hood. During a siege, Erazem used a secret passage within the extensive cave system to smuggle in supplies, famously mocking his attackers. His dramatic demise, reportedly by a cannonball while on the toilet, adds to the castle's rich lore. You can also visit the Linden Tree of Erasmus of Predjama, planted on his grave.

What natural features can I explore near the castles?

Beyond the castles themselves, the region offers impressive natural wonders. Predjama Castle is built into a cave system, with a portion open to visitors seasonally. Nearby, the Planina Cave is one of Slovenia's longest water caves, where the Pivka and Rak rivers meet underground, creating a unique natural spectacle.

Are there family-friendly activities or hikes near the castles?

Yes, the area around Postojna offers family-friendly options. While exploring Predjama Castle, families can enjoy the historical narrative with audio guides and see mannequins recreating medieval life. For outdoor activities, there are several family-friendly hikes available, such as the "View of Predjama Castle – Predjama Cave loop from Predjama Castle" which is a moderate 7.2 km trail. You can find more options in the Family-friendly hikes around Postojna guide.

What is the best time to visit Predjama Castle?

Predjama Castle is open year-round. However, if you wish to explore the cave system beneath the castle, it is typically open to visitors from May to September. The cave is closed in winter to protect hibernating bats. Visiting during the warmer months allows for a combined experience of the castle and its unique underground passages.

How can I get to Predjama Castle by public transport or car?

Predjama Castle is located just 9 kilometers from Postojna. During July and August, a free shuttle bus operates between Predjama Castle and Postojna Cave, making it convenient to visit both. If traveling by car, parking is available near the castle. Joint tickets for Predjama Castle and Postojna Cave are also available, making it a popular combined day trip.

Are there hiking trails near the castles around Postojna?

Absolutely. The region around Postojna offers various hiking opportunities. Near Predjama Castle, you can find trails like the "View of Predjama Castle – Predjama Cave loop from Predjama Castle," a moderate 7.2 km hike. For more options, including family-friendly routes and varying difficulties, explore the Family-friendly hikes around Postojna guide.

What other outdoor activities can I do near these castles?

Besides hiking, the Postojna area is excellent for cycling. You can find traffic-free bike rides, such as the "Goče Vineyards Scenic Road – Karst Vineyards Scenic Road loop from Slap," a difficult 59 km route. Gravel biking is also popular, with options like the "View of Lake Cerknica – Lake Cerknica loop from Rakek." Discover more routes in the Traffic-free bike rides around Postojna and Gravel biking around Postojna guides.

Are there cafes or restaurants near Predjama Castle?

While specific cafes within the immediate vicinity of Predjama Castle are limited, its close proximity to Postojna Cave (just a 15-minute drive) means you can easily find dining options in the area surrounding the cave or in the nearby town of Postojna. Many visitors combine a trip to the castle with a visit to Postojna Cave, where amenities are readily available.

What do visitors enjoy most about Predjama Castle?

Visitors consistently highlight the castle's unique architecture and its integration with the cave system as truly fascinating. Many appreciate the detailed audio guides that bring the history, especially the stories of Erazem Lueger, to life. The ability to explore various parts of the castle and imagine medieval life within its walls leaves a lasting impression, with many calling it an indescribably fascinating and wonderful experience.

Can I visit Predjama Castle and Postojna Cave together?

Yes, it is highly recommended to visit both Predjama Castle and Postojna Cave as they are very close to each other, approximately 15 minutes apart by car. Joint tickets are available, and during July and August, a free shuttle bus connects the two attractions, making it a convenient and popular combined day trip.

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