The 10 Best Postojna Cave Tours in Koper

1.Postojna Cave and Predjama Castle Tour

★★★★★★★★★★4.7 · 60 reviews · 5 hours · from $133Our pick

Travel from Koper or Piran to Postojna Cave, ride its electric train, look for the cave-dwelling olm, then tour Predjama Castle beneath a 123-meter cliff. English, German, and Italian guides are available, with private and small-group options.

“Ernie was a great guide. Pickup and drop off at the port was seamless. The caves were absolutely breathtaking! And the castle was gorgeous. Definitely recommend this tour!”

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2.Postojna Cave & Predjama Castle from Koper

★★★★★★★★★★4.5 · 46 reviews · 5 hours (approx.) · from $139

Travel from Koper with a driver-guide to Postojna Cave, where an electric train leads into a vast underground world followed by a guided walk. Then tour Predjama Castle, built into a 123-meter cliff. Pickup is available from hotels, the port, stations, and other agreed locations.

“Our guide Tina and driver Robby were fantastic! Reading some of the previous reviews made us a little hesitant about going on this excursion, but both Tina and Robby quickly dispelled any doubts about the service. Let’s start with the transportation. We had a 18 passenger Mercedes Sprinter van that was very comfortable. Robby was a great driver navigating the narrow roads getting us to our destinations. Upon completing both tours, he was there waiting for us! Tina as our guide spoke 5 languages and was very fluent in English. She is a wealth of knowledge and shared a lot of regional history as well as information about the caves…”

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3.Tour to Postojna and Predjama Castle from Koper

★★★★★★★★★★5.0 · 45 reviews · 5 hours (approx.) · from $118Top rated

From Koper cruise port, a driver-guide takes you by air-conditioned vehicle to Postojna Cave for an electric train ride and guided underground walk, then to Predjama Castle for exterior photos. Guides such as Stanley, Luka, Andi, and Rastka have led this English-language trip.

“I would say if you only had one thing to see in Koper, then go see Postojna cave. It'll be nothing that you have ever seen before. Simply Amazing.”

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4.Postojna Cave & Photostop Predjama castle – Group Tour from Koper

★★★★★★★★★★5.0 · 35 reviews · 5 hours (approx.) · from $153

From Koper’s cruise terminal, an English-speaking guide takes you by air-conditioned vehicle to Postojna Cave, where a 15-minute electric train ride leads into an hour-long guided visit. You’ll then stop for 15 minutes at Predjama Castle before returning to your ship.

“The cave was amazingly beautiful and the tour interesting. Our guide was great and had a true love of his country.”

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5.Group tour to Postojna Cave from Koper – with unique cave train

★★★★★★★★★★4.5 · 20 reviews · 5 hours (approx.) · from $105Best value

From Koper port, you’ll ride an electric train through Postojna Cave’s vast Karst passages, walk about one kilometer underground, and make a photo stop at Predjama Castle. The cave stays near 10°C, so bring a jacket and shoes with good grip. Pickup, entry, transport, and an English-speaking escort are included.

“So pretty and interesting. Definitely lots of walking and chilly. Couldn’t hear the guide but that was part of the cave staff. Very slippery so wear sneakers. The train was an experience but fun and one of a kind”

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6.Koper/Trieste: Postojna Cave & Predjama Castle Tour & Ticket

★★★★★★★★★★4.9 · 17 reviews · 6 hours · from $140

From Koper, Trieste, Piran, or Portorož, ride an electric train through chilly Postojna Cave, then explore Predjama Castle with an audio guide. Your English-speaking driver-guide may be David, Eagle, or Kolya, and the compact van keeps this six-hour Slovenia outing simple and well organized.

“It was a wonderful day, well organized and provided by To Do in Slovenia. Thank you so much to our driver, Eagle (my apologies for spelling). He points out a local restaurant and recommends a delicious dish. Please book with confidence, we would definitely do it again and recommend it to friends and family without hesitation. The Postojna cave is enormous, and the Predjama castle is one of a kind. These activities are not to be missed. We hope you all enjoy it as much as we did, and thank you. To Do In Slovenia.”

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7.Postojna Cave & Predjama Castle – Shore Excursion from Koper

★★★★★★★★★★4.5 · 12 reviews · 5 hours (approx.) · from $142

Travel from Koper to Predjama Castle and Postojna Cave on a five-hour guided shore trip. Expect port pickup, included entry, a cave train, and guides such as Matt, Ernie, or Dejan. Bring a coat: the cave stays at 10 C year-round.

“We thought the cave and castle were amazing experiences. We were disappointed however that the excursion “hosts” did not provide any history or background during the drive.”

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8.Postojna Cave & Predjama Castle – Small Group Tour from Koper

★★★★★★★★★★4.5 · 5 reviews · 5 hours (approx.) · from $133

Travel from Koper by small-group vehicle to Postojna Cave, ride its electric train, walk through its 10°C tunnels, then visit cliff-built Predjama Castle. Andrea may handle the road transfer, while local guides explain the cave and castle. Allow about five hours, including round-trip pickup.

“There was a lot of stairs and dress warm for the cave experience, but it was awesome! This was a lovely trip!”

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9.Shore Excursion/Private – Postojna Cave and Ljubljana from Koper

★★★★★★★★★★5.0 · 4 reviews · 8 to 9 hours (approx.)

From Koper, take a private air-conditioned van to Postojna Cave and Ljubljana. Your local guide, including Igor Mackovsek on some departures, leads the cave visit and Ljubljana walk, with port pickup, entrance fees, and drop-off included.

“Igor was an amazing guide and the caves where the single most impressive thing I have ever seen traveling this world (and we have been to over 40 countries). The capital city of Slovenia was also worthy and very informative. Anyway, it was all that and now I have been to Slovenia!!!!”

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10.Half day tour to Postojna cave – Private tour from Koper

★★★★★★★★★★4.0 · 3 reviews · from $145

Leave Koper, Trieste, or Piran with a private driver-guide and spend about 6.5 hours exploring Postojna Cave and Predjama Castle. The cave visit includes its famous electric train and an included entrance ticket. Maurizio has led some departures, but the cave tour itself joins a standard group.

“Positive: very nice local driver and the country is gorgeous. A pretty drive to cave and castle Negative: This was billed as a private tour but it was really just private driver to the caves and the castle and back. The caves tour itself involved getting Read more”

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