The Beijing Liao and Jin Dynasty City Wall Museum (Chinese: 北京辽金城垣博物馆) is a museum built over the ruins of Beijing's Liao and Jin dynasty (1115–1234) city wall.

In 1990, the remnants of a water gate in the city wall of Zhongdu was discovered at the site.

[1] The museum's display space of 2,500 square meter is primarily underground.

[1] The remnants of the water gate, a wood and stone structure, is 43.4 m in length with a tunnel that is 21 m long and 7.7 m wide.

[1] The museum also showcases Liao and Jin era artifacts unearthed in and around Beijing.