Koga Monastery, a Sakya sect monastery of Tibetan Buddhism, is located in Koga Village, Purang County, Ngari Prefecture, Tibet. The main buildings of the monastery are Jokhang and Hundred Pillars Hall, which are arranged in an "L" shape. There is a small square in front of the halls. In the middle of the square there are wells, tall stupas and incense burners. Wall corridors are built on the walls around the square, and Mani tubes are placed. It is the gathering place for religious activities and folk celebrations of the monastery.