Yuetan Park is located in the west of Nanlishi Road and south of Yuetan North Street in Xicheng District, Beijing. Originally named "Xi Yue Tan", it is one of the five altars in Beijing. It was built in the ninth year of the Ming Dynasty (1530) and was the place where the Ming and Qing emperors worshipped the god of the night (moon) and the heavenly deities on the autumnal equinox. The ancient buildings such as the Bell Tower, the Heavenly Gate and the Divine Treasury are well preserved. In 1955, it was established as the Yuetan Park.