Serbia has a total of eight sites on the UNESCO World Heritage list: The Early Medieval capital Stari Ras and the 13th-century monastery Sopoćani, and the 12th-century monastery Studenica, and the endangered Medieval Monuments in Kosovo group, comprising the monasteries of Visoki Dečani, Our Lady of Ljeviš, Gračanica and Patriarchate of Peć (former seat of the Serbian Church, mausoleum of Serbian royalty) and finally the Roman estate of Gamzigrad–Felix Romuliana. There are two literary memorials on UNESCO's Memory of the World Programme: The 12th-century Miroslav Gospel, and scientist Nikola Tesla's valuable archive.