Top 100Romania's most visited cave: 488 m of lit galleries beneath the village of Chișcău, full of stalactites and stalagmites, with the bones of some 140 cave bears left where they were found.
Top 100A small, easy-to-visit cave on the Rucăr–Bran corridor, in Piatra Craiului National Park: a dry gallery carved by the Dâmbovicioara stream, with about 250 m laid out and lit.
Top 100Romania's largest natural bridge and the only one in the world carrying a public road: a 30 m limestone arch left standing after a cave roof collapsed, in the village of Ponoarele on the Mehedinți Plateau.
Top 100A cave in the Apuseni Mountains that holds one of the largest underground glaciers in the world: a block of ice over 10,000 years old, reached by stairs down a shaft 60 m across.
Top 100A four-level cave in the Galbenul Gorge at the foot of the Parâng Mountains, with 860 m of lit galleries, cave bear bones and some of the oldest modern human remains in Europe.
Top 100A cave cut into the wall of the Ialomița Gorge, in the heart of the Bucegi Mountains at 1,660 m, with a monastery built against its mouth and 480 m of lit galleries leading to the Bears' Hall and the Altar.
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