Object description

Gaocheng Astronomical Observatory, also known as the Dengfeng Observatory, is a World Heritage Site in Duke of Zhou's shrine, Gaocheng Town, near Dengfeng in Henan province, China. This site has a long tradition of astronomical observations, from the time of the Western Zhou up to the early Yuan dynasty. There is also a gnomon used for the Da Yan calendar in 729 AD and the great observatory of the Yuan Dynasty.