Former Tainan Waterworks

The Former Tainan Waterworks (原臺南水道) is a historic water supply complex located in Shanshang District, Tainan City, Taiwan. Construction began in 1912 during the Taishō era under the Taiwan Governor-General's Office, with the goal of providing clean water to approximately 100,000 residents of Tainan — then one of the largest cities in colonial Taiwan. The project was directed by Hamano Yashirō (濱野彌四郎, 1869–1932), a sanitation engineer from Chiba Prefecture known as the "Father of Taiwan's Waterworks," who had accompanied the Scottish engineer William K. Burton to Taiwan in 1896 to survey water sources across the island.

The facility drew water from the upper reaches of the Zengwen River (曾文溪) and utilized a roughly 60-metre elevation difference between the water source in the mountains and the city below to distribute water by gravity. The system incorporated Western-style sedimentation basins, British-manufactured rapid filter cylinders, pumping stations, and a water purification pool area. The complex featured Baroque-influenced red brick and reinforced concrete buildings housing steam-powered and later electric pumping equipment. A 36.3-metre smokestack, built around 1918, served as a landmark until its demolition in 1982.

During World War II, the waterworks played a strategic role in supplying water to military installations in the Tainan area. The smokestack was camouflaged with tree branches to avoid Allied aerial bombardment, and in 1943–1944, the bronze statue of Hamano Yashirō that stood on the grounds was melted down to provide metal for the Japanese war effort. The facility continued operating through the war and into the postwar period.

After Japan's surrender in 1945, the facility — renamed the Tainan City Water Management Office in 1949 — continued to serve as Tainan's primary water source. Operations were expanded in 1952 with new pump stations. By 1973, newer treatment facilities gradually reduced the original waterworks' role, and in 1982 the facility was fully decommissioned after seven decades of service.

The site was designated a county-level historic site in 2002, upgraded to a National Historic Monument (國定古蹟) in 2005, and recognized as a Civil Engineering Heritage site by the Japan Society of Civil Engineers in 2010. Following extensive restoration in two phases, the second carried out by the Tainan City Government from 2016, the complex opened on October 10, 2019 as the Tainan Shan-Shang Garden and Old Waterworks Museum. The museum preserves 14 British-made rapid filter cylinders, original pumping machinery, and the architectural ensemble of the water source and purification areas. It received the 5th National Cultural Asset Preservation Award in 2020.