The Temple of Heaven is considered to be one of the most sacred temples of Beijing's Royal temples. The temple was built during the Ming Dynasty, around 1420 AD. The temple was used to served as the sacred place where emperors of the Ming Dynasty (1368 - 1644) and Qing Dynasty (1644 - 1911) held their worship ceremonies to pray for good harvest. It has been a UNESCO World Heritage Site since 1998.