At the UNESCO World Heritage Site was entered in 1978. Salt is mined here continuously since the thirteenth century. Mine consists of 9 levels from 64 to 327 meters below the surface.
The first UNESCO World Heritage List from 1978 year had only 12 the most valuable objects from around the world. One of them was Krakow - the Old City, the Royal Wawel Castle and jewish Kazimierz.
