Salina Turda, Romania | Man-Made Marvels of the Underground World

Salina Turda, Romania

The salt mines at Turda, Romania, have been in use since antiquity, but continuous production didn't begin until 1075; in the 20th century it fell into disuse. In what can only be called a stroke of genius, the authorities converted the abandoned 368-foot-deep mine into an underground museum, recreation center and halotherapy spa complete with a basketball court, a mini-golf course, Ferris wheel, and even an underground lake for boating events. Visitors with allergies and asthma will want to check out the mine’s halotherapy spa facilities, which combine ionized air, pressure, and humidity in the salt-lined caves to treat persistent respiratory problems.

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