Brief synthesisThe Wieliczka and Bochnia salt mines are located on the same geological rock salt deposit in southern Poland. Criterion (iv): The Wieliczka and Bochnia Royal Salt Mines illustrate the historic stages of the development of mining techniques in Europe, from the 13th to the 20th centuries. IntegrityThis serial property consists of all three components historically constituting one royal enterprise Kraków Saltworks: Wieliczka salt mine, Bochnia salt mine and the Saltworks Castle in Wieliczka. Management and protection requirementsThe Wieliczka salt mine is legally protected both as a registered historic monument (N° A-580, 1976) and as the Monument of History (Presidential decree, 1994). Wieliczka Saltworks Castle is inscribed on the register of historic monuments of the State Party (N° A-579, March 1988).