Water Gate Site in Middle Capital City of Jin Dynasty was discovered in 1990 during construction work in Beijing "Xixiang Project" (西厢工程). Following formal archaeological excavations, a museum was established on the original site.

The remains visible today consist of the foundational base of the water gate structure. The water gate is believed to have been constructed during the building of Jinzhongdu (AD 1151–1153). Based on unearthed artifacts, it is thought to have been destroyed in the mid-to-late Yuan Dynasty.

The discovery of the water gate has largely enabled the reconstruction of the origin, course and location of a major water system within the ancient city, which confirms that it was built largely in accordance with the official architectural standards of Bianjing (Kaifeng), the Northern Song capital. As an important relic of the water supply and drainage system of an ancient capital, the site holds significant value for the study of Beijing's historical geography.

Address: Yulin Community, You'anmen Wai, Fengtai District, Beijing

(Source: Official website of the People's Government of Beijing Municipality)