Slovenia's World Heritage Sites, one by one

How many UNESCO sites does Slovenia have?

First, the number. The Tourist Board talks about six special heritage features, but UNESCO counts five properties with components in Slovenia, and that’s the figure I use. Three of them are shared with other countries, so what you see in Slovenia is one part of a bigger whole. Bear that in mind when a list tells you otherwise.

Škocjan Caves (1986)

The country’s first listing and, for me, the most impressive. They were inscribed in 1986 as a natural property covering 413 hectares around the hamlets of Škocjan, Matavun and Betanja, in the municipalities of Divača and Sežana. UNESCO ranks them among the biggest underground river canyons known anywhere, cut by the Reka, with chambers up to 150 metres high and more than 120 metres wide; the Martel Chamber exceeds two million cubic metres. It’s nothing like an ordinary show cave, and I go into it properly in Škocjan Caves.

Plečnik’s works in Ljubljana (2021)

The most recent listing is also the easiest to see. UNESCO protects seven components of Jože Plečnik’s work, namely Trnovo Bridge, the green promenade on Vegova Street, the embankments and bridges of the Ljubljanica, the Roman walls at Mirje, St Michael’s church in the marshes, St Francis of Assisi in Šiška and Žale, his garden of All Saints. Most of it is in the centre and free, so you’ll see it just by walking around. The full list and the order I’d follow are in Plečnik’s Ljubljana.

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Idrija, with Almadén (2012)

Being Spanish, this is the one that speaks to me most. Idrija forms a single property with Almadén, in Castilla-La Mancha, the Heritage of Mercury, inscribed in 2012. UNESCO explains that mercury was found at Idrija in 1490 and that the two were the largest mercury mines in the world, and it protects the storehouses, the infrastructure, the miners’ houses and the miners’ theatre. On top of that the town has the kamšt, a wooden water wheel 13.6 metres across, and its lace, taught at a school that has been running for more than 140 years. It makes an easy day out from Ljubljana, and if you’ve ever been to Almadén you’ll recognise the logic of a town built around a single mineral. More in Idrija.

The pile dwellings at Ig (2011)

The Prehistoric Pile Dwellings around the Alps form a six-country series, and Slovenia contributes two groups of pile dwellings at Ig, in the Ljubljana Marshes, one to the north and one to the south. To my eye it’s the least visual of the five, so I’d recommend it mainly to anyone with an interest in prehistory. How to visit is in the Ig pile dwellings.

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The beech forests of Krokar and Snežnik-Ždrocle

The Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe were inscribed in 2007 and extended in 2011, 2017 and 2021. Slovenia has two components, Krokar, in the Kočevje area, and Snežnik-Ždrocle. These are primeval forests, protected more for their ecological value than for tourism, and around Kočevje the Tourist Board mentions brown bears, lynx and wolves. For me it’s the most special listing for walkers and the least rewarding for anyone after a photo. I explain it in Krokar primeval forest.

What isn’t on the list but still counts

The Tourist Board also lists UNESCO intangible heritage, with the Kurent processions of Ptuj, the Škofja Loka Passion, whose manuscript dates from 1721, Lipizzaner horse breeding shared with seven other countries, bobbin lacemaking and midwifery. There are two UNESCO Global Geoparks, Idrija and Karavanke, the latter shared with Austria, and four biosphere reserves, the Julian Alps, which was Slovenia’s first, the Karst, Kozjansko and Obsotelje, and the Mura. On the tentative list sit the Walk of Peace along the Isonzo Front, the Franja Partisan Hospital, the Fužine plateaus and the Classical Karst.