Saint Catherine's Monastery (Greek: ) lies on the Sinai Peninsula, at the mouth of an inaccessible gorge at the foot of modern Mount Sinai in Saint Catherine at an elevation of 1550 meters. The monastery is Greek Orthodox and is a UNESCO World Heritage Site. According to the UNESCO report (60100 ha / Ref: 954) and website hereunder, this monastery has been called the oldest working Christian monastery in the world – although the Monastery of Saint Anthony, situated across the Red Sea in the desert south of Cairo, also lays claim to that title.