Beijing Liao and Jin City Wall Museum, Archaeological museum in You'anmen, China.

The Beijing Liao and Jin City Wall Museum is an archaeological site that preserves an ancient water gate structure built into the ground. The place features an underground exhibition space with recovered objects and architectural remains from medieval Chinese dynasties.

The site came from the rediscovery of ancient gate structures that were connected to walls built during the Liao and Jin dynasties. The museum was later established to make these medieval remains accessible to the public.

The place shows how people lived and worked during the Liao and Jin periods. Visitors can see household items and building parts that reveal daily activities and crafts from these medieval times.

The museum opens Tuesday to Sunday from 9:00 to 16:00 and is closed on Mondays. It admits at most 200 visitors per day, and no more than 30 people at a time in the underground water gate hall. The nearest metro is Jingfengmen on Lines 14 and 19, 500 m east.

The place shows water passages from when Beijing served as the Jin Dynasty capital. These underground channels and gates let visitors explore engineering work from the 12th century.