Hongkou Outdoor Swimming Pool is located in the northwest of the city, right beside the century-old Lu Xun Park and just south of Hongkou Football Stadium. Originally built in 1922 and once known as the “Municipal Council Swimming Pool,” it is one of the earliest public swimming pools in Shanghai. After being renovated and reopened in 2020, it remains a large outdoor, regulated circulating-water pool while preserving much of its historic structure. The pool measures 53 by 23 meters, with depths ranging from 1 to 2.3 meters, and covers an area of 1,219 square meters. One of its most recognizable features is the 1931 diving platform, which has been carefully preserved through multiple rounds of restoration. Over the years, the site has evolved with additions such as children’s pools, water slides, and a large sunshade structure, while still retaining original architectural elements like its entrance, pump room, and pavilion buildings. Open mainly during the summer season from July to August, it occasionally hosts free public sessions during fitness events, and today stands as a rare blend of everyday swimming spot and living piece of Shanghai’s history.