The Old City of Shanghai (上海古城, Shànghăi Gùchéng) refers to the most ancient area of Shanghai. It is circular in shape even today, and used to be surrounded by a defensive wall. Today, the walls have been replaced by broad circular avenues, the Renmin Lu to the North and Zhonghua Lu to the South.

An original city wall dating back to the 11th century surrounded the ancient city of Shanghai.[1] The city wall, parts of which remain to this day, was built in 1554, in order to protect the town from raids by Japanese pirates. It measured 10 metres high and 5 kilometres in circumference.

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