Mogao Grottoes, also known as the Caves of a Thousand Buddha’s, is situated at the eastern foot of Mingsha Mountain, 25 km southeast of Dunhuang in Gansu Province. It measures 1,680 meters north south. The grottoes created in different periods of time are clustered on the steep cliff, which is 15-30 meters high. Begun in 366 and completed in 1386, these grottoes evidenced a thousand years of history. There are 492 grottoes containing murals and   painted statues, over 250 residential caves, 2,400 painted statues, 45,000-square-meter murals, and 5 cave with eaves built in the Tang and Song Dynasties. These are the vivid records of China's Buddhism history, art history and social life. Mogao Grottoes in Dunhuang are the largest Buddhist grottoes with the longest history and the richest treasures both in China and in the world.