The Former Yasuda garden is a Daimyo garden in Sumida Ward, Tokyo. This is the first Japanese-style garden opened thanks to a contribution of a private philanthropist. Unfortunately, this garden was destroyed by the Great Kanto Earthquake and World War II. It was also ruined by the pollution of the Sumida River. After the jurisdiction of the garden was transferred from the Metropolis of Tokyo to Sumida City in 1969, it underwent an overall renovation and was newly opened to the public in 1971. The pond at the centre of the garden is the shape of a heart and is filled directly with water from the Sumida River, and thus rises and falls with the river’s tide.