Postojna Cave & Predjama Castle
Slovenia’s Underground and Cliffside Marvels
Overview
Start your Adventure
Experience two of Slovenia’s most unique and unforgettable attractions in one day! This day trip from Ljubljana takes you deep underground into the world-famous Postojna Cave, followed by a visit to the dramatic and mysterious Predjama Castle, built into a towering cliff face.
Perfect for families, history buffs, and nature lovers, this tour offers a fascinating glimpse into Slovenia’s underground world and medieval legends – all within a short drive from Ljubljana.
Highlights
Postojna Cave
- Ride the underground electric train through an incredible limestone world
- Walk through chambers filled with stalactites, stalagmites, and natural sculptures
- Learn about the “baby dragons” – the rare olm creatures found only in this region
Predjama Castle
- Explore a medieval castle built into a 123-meter-high cliff
- Hear fascinating tales of knights, sieges, and secret escape tunnels
- Enjoy stunning views of the surrounding Karst landscape
Popular Spots
- Postojna Cave – ride the underground train
- Postojna Cave – see the “baby dragons” (olms)
- Predjama Castle – medieval fortress in a cliff
- Secret escape tunnels of knight Erazem
- Panoramic views of Karst landscape
Travel
Tour details
- Departure: From Ljubljana (hotel pickup or central meeting point)
- Duration: Half-day or full-day option (approx. 5–6 hours)
- Transport, English-speaking guide, Entrance fees to Postojna Cave and Predjama Castle
- Not included: Meals, tips for guide and driver 🙂
Good to know:
- Dress warmly – the cave stays around 10°C (50°F) year-round
- Comfortable walking shoes are recommended