Claim: Oplenac, the mausoleum of the Serbian and Yugoslav royal house of Karađorđević, services were held until 1947; after that, it was declared a cultural monument and open to visitors.
Evidence: St George's Church in Oplenac (Serbian Cyrillic: Црква Светог Ђорђа на Опленцу, Serbian Latin: Crkva Svetog Đorđa na Oplencu) also known as Oplenac (Опленац), is the mausoleum of the Serbian and Yugoslav royal house of Karađorđević located on top of the Oplenac Hill in the town of Topola, Serbia. Church services were held until 1947. After that, it was declared a cultural monument and open to visitors.