Murals of Mogao cave 419, A.D. 581-618Sui Dynasty. The...

DUNHUANG, GANSU PROVINCE, CHINA - 2016/06/09: Murals of Mogao cave 419, A.D. 581-618Sui Dynasty. The Mogao Caves, also known as the Thousand Buddha Grottoes, are the best known of the Chinese Buddhist grottoes and, along with Longmen Grottoes and Yungang Grottoes, and listed on the UNESCO World Heritage. (Photo by Zhang Peng/LightRocket via Getty Images)