The Temple of Heaven in the southern part of Beijing is China's largest existing complex of ancient sacrificial buildings. Occupying an area of 273 hectares, it is three times the area of the Forbidden City. It was built in 1420 for emperors to worship Heaven. The principle buildings include the Altar of Prayer for Good Harvests, Imperial Vault of Heaven and Circular Mound Altar. [China.org.cn/Photo by Feng Jun]