The Old City used to be completely surrounded by a wall, built in 1553 as a defense against Japanese pirates. Most of it was torn down in 1912, except for one 50-yard-long (40-meter-long) piece that still stands at Dajing Lu and Renmin Lu. Shanghai history enthusiasts can walk through the remnants and check out the rather simple museum nearby, which is dedicated to the history of the Old City (signs are in Chinese). Stroll through the tiny neighboring alley of Dajing Lu for a lively panorama of crowded market life in the Old City.
269 Dajing Lu, at Renmin Lu, Shanghai, 200010, China