Yuan Dadu City Wall Ruins Park

The Yuan Dadu City Wall Ruins Park (Chinese: 元大都城垣遗址公园), also known as the Tucheng or Earth Wall Park (Chinese: 土城; pinyin: Tǔchéng; lit. 'Earthen Wall'), is an urban park and historic site in Haidian and Chaoyang districts, Beijing.

Source: Wikipedia — Yuan Dadu City Wall Ruins Park (CC BY-SA 4.0)