Beijing's city wall was built around 1435. It stretched for 23.5 km with one part running where Metro Line Two is now (inner city wall) and one part running where the southern part of Ring Road Two is now. Since 1949 (and especially around 1965), most was torn down to make room for Ring Road Two, Metro Line Two and Tiananmen. Now only 1.5 km remains behind Beijing Station. It has been restored and surrounded by a small park. The wall also houses a cafe and a gallery.

The Beijing Ming City Wall Ruins Park (traditional Chinese: 北京明城牆遺址公園; simplified Chinese: 北京明城墙遗址公园; pinyin: Běijīng Míng Chéngqiáng Yízhǐ Gōngyuán) is a park in Beijing with the longest and best preserved section of the city's Ming Dynasty city wall. The park is located 3 km (1.9 mi) from the city center and extends east from Chongwenmen to Dongbianmen and then north to near to Beijing Railway Station East Street. The park features a 1.5 km (0.93 mi) section of the Ming city wall and the Southeast Corner Tower, which are over 550 years old and surrounded by green park space to the south and east. The park covers an area of 15.5 ha (38 acres), including 3.3 ha (8.2 acres) of fortifications and 12.2 ha (30 acres) of green space. The corner tower and the ramparts atop the wall can be accessed for an admission fee.