Located on Mission Hill in Shek Kip Mei, the Ex-Sham Shui Po Service Reservoir is a Romanesque cistern featuring granite piers, red brick arches, and concrete cove ceilings. With a storage capacity of 9,900 cubic metres, it was built in 1904 to service residents of Kowloon Tong, Sham Shui Po, and Tai Hang Tung. The historical site was discovered in 2020, and in 2021, the Antiquities Advisory Board recognised it as a Grade 1 historic structure. For those who are curious about Hong Kong’s water supply history over the past century, the Government has opened the site for individual or group guided tours. The tours start at Berwick Street in Shek Kip Mei, followed by a 15-minute walk to the peak of Mission Hill. Those who want to explore the reservoir from the comfort of their home can also go on a virtual tour created by the Water Supplies Department, which gives viewers a 360-degree view of the structure and interesting information about its architectural characteristics.