Chang'an, located near modern Xian in Shaanxi Province, was the capital of several dynasties of ancient China from the Zhou to the Tang and eventually became one of the world's great metropolises. With regular tree-lined avenues, high walls, pleasure parks, and areas dedicated to specific functions, it provided a model which was copied by other Asian capitals, notably in Japan and Korea.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Chang'an/.