Roundabout Travel · Ljubljana
Roundabout Travel takes up to eight people from the Eurostars uHotel in Ljubljana to Predjama Castle and Postojna Cave, with both entrance tickets paid. It's the tickets-included trip with the smallest group and you're back by early afternoon.

You meet by the water fountain in front of the Eurostars uHotel on Miklošičeva cesta at 8:30 AM, a short walk from the old town. The group is eight at most, guests have reported tours with only four on board, and the entrance fees for both sights are in the price. The listing plans an hour at Predjama Castle and an hour and a half at Postojna Cave, and the tour ends back at the fountain.
The small group is the point. With eight people the guide can buy tickets, walk you to the right cave entrance and fit around kids: one family travelling with children of 6, 4 and 1 wrote that the company provided car seats. Inside, the park's guides and audio guides do the explaining, at the cave and at the castle.
Read the reviews before you book if you expect a full guided tour. A few guests felt it was mostly transport plus tickets, and some wanted more time at the sites. For about $10 less per person than the To do in Slovenia trip you get a smaller group, but only a morning start.
In front of the Eurostars uHotel, Miklošičeva cesta 3, Ljubljana. Board an air-conditioned vehicle.
Out of Ljubljana on the motorway towards Postojna. Traffic can flip the order of the stops, as one guest found.
The castle built into the mouth of a cave, with its armoury, rooms and the legend of the rebel knight Erazem. The castle tour runs on an audio guide.
Ride the electric train into the cave, walk the formations with the park's guide, ride back out. Bring a layer: it's 10°C inside.
The tour ends where it started, at the Eurostars uHotel.
★★★★★Trip included all costs, including tickets to the cave and castle, and a quite good audio guide for the castle. The guide seemed quite knowledgeable about what to expect during the experiences as well as Slovenian history.
★★★★★Miha was an amazing tour guide! We traveled with our 3 small children - ages 6, 4, and 1 - and the tour was perfect for our family. The company provided car seats which made it very easy for us to enjoy with no added stress.
★★★★★there were only four of us on the tour which was great [...] the whole tour was very punctual, he gave us a personal tour of the castle and made sure we were in the right spot for the cave tour
★★★★★What a wonderful day we had. Both the cave and the castle were incredible & must not be missed. Our driver Faris was a great source of information, professional, friendly & an all round great guy.
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Yes. The listing includes entrance fees to Postojna Cave and Predjama Castle. Food, drinks and tips are extra.
At the water fountain in front of the Eurostars uHotel, Miklošičeva cesta 3, Ljubljana, at 8:30 AM. It ends back at the same spot.
Eight at most. Guests have reported days with only four travellers on board.
Yes, with a caveat. Ages 2 to 11 pay the child rate, a family with kids of 6, 4 and 1 got car seats, and folding strollers fit on the cave train. The castle has many stairs and is not suitable for strollers.
Ready to book
Cave and castle tickets included in a group of up to eight, with free cancellation up to 24 hours before.
Postojna Cave & Predjama Castle, Tickets IncludedThe most-booked trip here: both tickets in the price, pickup in central Ljubljana, morning or afternoon every day.★ 4.8 · 6 hours · from $131
Postojna Cave & Predjama Castle Small-Group TourThe lowest fare here, in a minivan of eight at most. Entrance tickets are extra and bought on the day.★ 4.8 · 5.5 hours · from $78
Postojna Cave & Predjama Castle Tour from LjubljanaPickup at your Ljubljana accommodation, eight people at most. Tickets extra, with a 10% agency discount.★ 5.0 · 5.5 hours · from $80