Postojna Sights

  1. Otok Cave

    Otok Cave, some 1.5km northwest of Postojna Cave, is very small (632m in length) and the tour only takes about an hour, but its stalagmites and stalactites are very impressive. There's no electric lighting, so you'll need a torch, and the temperature is 8°C.

    Read more about Otok Cave

  2. Pivka Cave and Black Cave

    Pivka Cave and Black Cave - the most popular caves after Postojna - are about 5km to the north. The entrance is in the Pivka Jama camping ground. You reach the 4km-long system by descending more than 300 steps. A walkway has been cut into the wall of a canyon in Pivka Cave, with its two siphon lakes and a tunnel, and a bridge leads to Black Cave. This is a dry cavern and, as the name implies, its dripstones are not white. A tour of both caves takes about two hours.

    Read more about Pivka Cave and Black Cave

  3. Planina Cave

    Planina Cave 12km to the northeast near the unpredictable Lake Planina, is the largest water cave in Slovenia and a treasure-trove of fauna (which includes Proteus anguinus ). The cave's entrance is at the foot of a 100m rock wall. It's 6.5km long, and you are able to visit about 900m of it in an hour. There are no lights so take a torch. Many parts of the cave are accessible only in low water or by rubber raft.

    Read more about Planina Cave

  4. Postojna Cave

    Visitors get to see about 5.7km of the cave on 1½-hour tours; some 4km of this is covered by an electric train, which runs as far as the Big Mountain (Velika Gora) cavern. Here you stand under one of the five signs identifying your language, and a guide escorts you through halls, galleries and caverns.

    Read more about Postojna Cave

  5. Predjama Castle

    Situated in the gaping mouth of a cavern halfway up a 123m cliff just 9km northwest of Postojna, Predjama Castle has one of the most dramatic settings. Although a castle has stood on the site since 1202, the one you see today dates from the 16th century. Then - as now - the four-storey fortress looked unconquerable.

    Read more about Predjama Castle

  6. Predjama Castle Cave

    Below Predjama Castle, is a 6km network of galleries spread over four levels. Much of it is open only to speleologists, but casual visitors can see about 900m of it. Longer tours to the end of the cave's Eastern Passage or Erazem's Gallery are available by prior arrangement only. Erazem Lueger was a 15th-century robber who, like Robin Hood, stole from the rich and handed it over to the poor. During the wars between the Hungarians and the Austrians, Lueger holed up Predjama Castle.

    Read more about Predjama Castle Cave

  7. Proteus Vivarium

    Two hundred species of fauna (including cave beetles, bats, hedgehogs, and the 'human fish') found in the cave are studied at the Proteus Vivarium, which is part of a speleobiological research station located in the cave. It is open to visitors and has a video introduction to underground zoology. A 45-minute tour then leads you into a small, darkened cave to peep at some of the shy creatures you've just learned about.

    Read more about Proteus Vivarium