The Top 10 Natural Monuments around Postojna
Postojna’s landscape is a beautiful place to explore — something that you can best experience by visiting one of our 10
beautiful natural monuments around Postojna. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
beautiful natural monuments around Postojna. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
Last updated: December 18, 2025
Postojna Cave
Highlight • Cave
Really fantastic cave system. Is the largest show dripstone cave in Europe and the second largest in the world. Guided tours are available in several languages or via audio guide. …
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Predjama Castle
Highlight • Castle
13th-century cave castle built into a rock face with restored living quarters, dungeons and secret tunnel.
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Proteus Vivarium (Olm Exhibit)
Highlight • Cave
Cave olms never grow up: they spend their entire lives in the larval stage. Researchers estimate that they can live to be 100 years old. The females are sexually mature …
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Planina Cave
Highlight • Cave
The Planina Cave (Slovenian: Planinska jama), formerly also the Small Castle Cave (Malograjska jama) after the Small Castle near its entrance, is one of the longest Slovenian water caves. It …
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Planina Polje
Highlight • Natural
Planina Polje, crossed by the river Unica, is one of the best known and most scenic karst poljes in Slovenia. The meadows along the meanders of the Unica tell a …
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Suhi Vrh Summit
Highlight • Summit
At 4,308 feet (1,313 m), Suhi vrh is the highest point on the Nanos plateau. While it's not as popular as Pleša at the massif's southern end, a hike around …
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Pivka Cave / Abyss of the Pivka River
Highlight • Cave
The entrance to the Pivka Cave is located five kilometers from the Postojna Cave. You have to descend 317 steps to a depth of 65 meters, located in the campsite …
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Natural window
Highlight • Cave
A gaping hole in the limestone walls of the massif, this natural window is a geological marvel. The arch provides a superb subject for photography, with the landscape unfurling below. …
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Erasmus's Tomb and Linden Tree at Predjama
Highlight • Historical Site
The legend tells that Polissena, Erasmus's lover, buried Erasmus near the small church in front of the Predjama Castle, planting a lindem tree which is still standing today.
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Maj Summit
Highlight • Summit
From here, you get a fantastic view down the length of Nanos' east-facing escarpment, all the way towards Pleša, at the southern end. The massif wears a cloak of woodland, …
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