Top 20A salt mine worked from the Middle Ages until 1932 and turned into a spectacular underground park: a Ferris wheel, a lake with rowing boats, an amphitheatre and salt walls 120 m below ground, near Cluj.
Top 100A working salt mine near Râmnicu Vâlcea that you enter by bus through a tunnel: huge galleries with swirling salt walls, sports courts, an ice rink and the country's largest underground church.
Top 100A spa resort 15 km from Sibiu with salt lakes formed where old salt mines caved in: in summer you swim in water that keeps you afloat, between white banks of salt.
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