Worshipers kiss this gold icon of the Virgin Mother at the Orthodox Cathedral in Brasov, Romania

Playground at the bottom of Rudolf Salt Mine in Turda, Romania, includes a Ferris Wheel, bowling lanes, and pool tables

Wooden walkway cut into salt walls provides an overview of the Salina Turda Salt Mine in Turda, Romania, where patients come for respiratory treatment

Franz Josef Gallery at the Salina Turda Mine in Turda, Romania, was built to more easily convey salt blocks to the surface

This extraction machine at Salina Turda Salt Mine in Turda, Romania, used horse power to vertically raise blocks of salt to the surface