The United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Sites are places of importance to cultural or natural heritage as described in the UNESCO World Heritage Convention, established in 1972. Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites). Natural features (consisting of physical and biological formations), geological and physiographical formations (including habitats of threatened species of animals and plants), and natural sites which are important from the point of view of science, conservation or natural beauty, are defined as natural heritage. Turkey accepted the convention on March 16, 1983.
There are 22 World Heritage Sites in Turkey, of which 20 are cultural and 2 are mixed, listed for both cultural and natural values. The first sites to be inscribed were Göreme National Park and the Rock Sites of Cappadocia; the Great Mosque and Hospital of Divriği; and the Historic Areas of Istanbul, all at the 9th Session of the World Heritage Committee in 1985. The latest inscription, Sardis and the Lydian Tumuli of Bin Tepe, was added to the list in 2025. In addition, Turkey has 79 sites on its tentative list.