SLOVENIA // Slovenia's subterraneous Postojna region has an enviable swag bag of attractions. First, there's brooding Predjama Castle, wedged into the gaping mouth of a cavern halfway up a 123m-high (404ft) cliff, looking unconquerable. Drawbridge? Tick. Dank dungeon? Tick. Ancient treasure haul? Tick. Less than 10km (6 miles) down the road, the awesome karst cave of Postojna swallows crowds in a series of caverns, halls and passages some 20km (12 miles) long and two million years old. These subterranean systems harbour the unusual and totally blind olm - a vertebrate endemic to southeastern Europe's karst, and the world's largest exclusively cave-dwelling animal.

Why is Predjama Castle famous?

Located halfway up a 400-foot (123 m) vertical cliff, the fort dates back to 1202 and is listed in the Guinness World Records as the world's largest cave fort. With a Renaissance facade dating back to the 1580s, the word "grand" doesn't even begin to describe it.

Is it worth visiting Predjama Castle?

Predjama Castle is one of the must-see attractions in Slovenia! Love this castle built in a cave. Be prepared for a lot of stairs, but once you get there, the views are amazing. Apparently it's about 800 years old, but I enjoyed the combination of building the castle and the cave itself.

What was filmed at Predjama Castle?

Armor of God
This castle was featured in Jackie Chan's movie Armor of God. This castle was featured in season 3 of The Witcher series

Can you go inside Predjama Castle?

A guided tour of Predjama Castle is available through an app included in the ticket price. If you want to tour the castle using an audio guide, you can rent one at the castle ticket office for an additional fee (€2.90).

What is the most attacked castle in Europe?