No2.Dongbiaobei Hutong.
Beijing, China
100005

Initially built in the Ming Dynasty (around AD. 1442), Ancient Observatory has already had a history of more than 500 years. The Ancient Observatory is located in the southwest side of Jianguomen crossroad at Dongcheng District.

Ancient Observatory is a special topic site museum of nature science displaying Chinese ancient astronomical equipment and astronomy. Now, it has been reformed to Beijing Ancient Astronomical Equipment Exhibition Hall, which belong to Beijing Astronomy Observatory and was official opened in 1956.

This ancient observatory was built by the astronomers Wang Xun and Guo Shoujing. Its original name was the Administration of Heavenly Observatory. It was changed into Constellation Observatory in the 7th year (1442) of Emperor Zhentong of the Ming dynasty and known simply as Observatory in the Qing dynasty. It has a history of more than seven hundred years since then.