Predjamski Grad (Predjama Castle) is one of the most dramatic castles in the world — a Renaissance fortress built directly into the mouth of a vast limestone cave, 123 metres up a vertical cliff face in the Karst region of Slovenia, where it hangs impossibly from the rock like something from a fantasy novel, complete with secret passages, a network of caves behind the walls, and the legend of the rebellious knight Erasmus who held out here against a year-long siege. The castle in its current form dates from the 16th century, but a fortress has occupied this site since at least 1202. The combination of human architecture and natural cave — the castle literally merges with the rock, the upper rooms warm and dry in winter thanks to the geothermal properties of the cave system behind them — makes Predjama one of the most perfectly integrated structures in Europe, and a strong candidate for the most photogenic castle on the continent.

Quick Facts: Predjama Castle, Slovenia

• Best time to visit: Year-round; the castle is at its most dramatic in the golden light of late afternoon when the cliff face glows; July for the Erasmus Knight’s Tournament — a medieval reenactment festival; the cave beneath the castle is accessible as part of a guided tour (advance booking recommended)
• How to get there: ~50 minutes from Ljubljana by car; ~10 minutes from the Postojna Cave (the two are commonly combined — tickets for both are available); bus from Ljubljana to Postojna + local bus or taxi to Predjama. It is a short but steep walk uphill from the car park to the castle entrance
• Entry fee: ~€15 (adult); combined ticket with Postojna Cave ~€35–40
• The legend of Erasmus: In the 15th century, the robber-knight Erasmus of Lueg held out against a year-long siege by the Habsburg army. The besiegers could not understand how Erasmus was receiving fresh food and supplies — until they discovered a secret passage leading from the castle through the cave system to the outside world, which Erasmus had used to resupply. According to legend, Erasmus was finally killed not by the siege but by a cannonball fired while he was in the most vulnerable room of the castle — the toilet
• Combine with: Postojna Cave (one of Europe’s most spectacular show caves, 9km away — it’s practically mandatory to combine the two), and the Lipica Stud Farm (the original home of the Lipizzaner horses, 30 min)
• Best for: Castle enthusiasts, photographers, fantasy fans, and anyone who wants to see a castle clinging to the side of a cliff

Predjamski Grad is the unique castle built within a cave mouth on the rock. It is located in southwestern Slovenia, about 9 km from Postojna Cave, above the river Lokva. Predjamski Grad was built on a high rock in the overhang.

The history of the castle dates back to the 13th century, when there is a first mention. At that time, a castle was built in Gothic style and was called Luegg. Today’s version of the Renaissance castle dates from the 16th century. In 1810 was Predjamski Grad owned by Count Michael Coronini von Cronberg. In 1846 the castle was sold to Windischgrätz family. They owned it until the end of the second World War II, when it was nationalized by the Yugoslav Communist authorities and turned into a museum, which is still located here.

Predjamski Grad has 5 floors. Today the castle is one of the biggest attractions in this area. Tours take place only in the summer and lead through the 15 rooms and a gallery. There are lots of various events in the castle such as the medieval tournament Erazem. Also you can make a wedding ceremony here.

Predjamski Grad was used as the castle featured in the 1986 movie Armour of God (film) by Golden Harvest starring Jackie Chan, Alan Tam, Rosamund Kwan and Lola Forner.

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Have you visited the cliff-hanging Predjama Castle or explored Slovenia’s Karst region? Share your cave-castle adventures in the comments! 🏰

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