Guided tour

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

Activity provider: KoperTours

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

Activity provider: KoperTours
Likely to sell out
Likely to sell out

From US$ 74.08 per person

Discover the underground chambers in the largest cave system in Slovenia on a guided tour and ride on the electric train. Stop at the unique Predjama Castle for a striking photo-op.

About this activity

Free cancellation
Cancel up to 24 hours in advance to receive a full refund
Covid-19 precautions
Special health and safety measures apply. Learn more
Reserve now & pay later
Reserve now & pay later to book your spot without any charges today. Learn more
Duration 5 hours
Check availability to see starting times.
Live tour guide


  • Explore Postojna Cave and discover a breathtaking underground world
  • Marvel at the unique Predjama Castle and get some stunning pictures
  • See baby dragons, the cave's olms, an endangered species, which can be found only in few places
Full description
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.
  • Entry fee to Postojna Cave
  • Predjama Castle photo stop
  • Predjama Castle Entry Fee
Not suitable for
  • People with claustrophobia
Covid-19 precautions

You must book this activity online because the ticket office is closed

Safety measures in place
  • All areas that customers touch are frequently cleaned
  • You must keep social distance while in vehicles
  • The number of visitors is limited to reduce crowds
Traveler requirements
  • You are required to bring and wear a mask

Select participants and date



Meeting point

Arrive 15 minutes before the activity starts. You must exchange your voucher at the ticket counter before the tour begins. Find the blue tour booth under the green umbrella.

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Important information

What to bring

  • Passport or ID card

Not allowed

  • Sandals or flip flops
  • Shorts

Product ID: 389410