The Monastery of the Transfiguration, known locally as Hristo [Christ] Monastery, is a prominent Greek Orthodox monastery that has served the Greek Orthodox community of Constantinople (modern Istanbul) since the time of the Byzantine Empire. The monastery is located on the island of Kınalıada, one of the Prince Islands in the Sea of Marmara. It is situated on one of the highest peaks on the island called Hristo Peak (93 meters), which is named after the Monastery.