Poland has 17 properties on the UNESCO World Heritage List, from Auschwitz Birkenau to Bialowieza Forest
Background
UNESCO records 17 Polish properties inscribed on the World Heritage List. Poland ratified the World Heritage Convention on 29 June 1976. Among the inscribed properties are Auschwitz Birkenau, the Wieliczka and Bochnia Royal Salt Mines, Bialowieza Forest, Centennial Hall in Wroclaw, the Tarnowskie Gory Lead-Silver-Zinc Mine and its Underground Water Management System, the Krzemionki Prehistoric Striped Flint Mining Region, and the Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe, which Poland shares with other states.
In plain words
World Heritage Convention Convention Concerning the Protection of the World Cultural and Natural Heritage — A state must ratify it before its sites can be inscribed.