Hama-rikyū Gardens is a metropolitan garden in Chūō ward, Tokyo, Japan. Located at the mouth of the Sumida River, it was opened to the public on April 1, 1946. A landscaped garden of 250,216 m² includes Shioiri-no-ike, and the garden is surrounded by a seawater moat filled by Tokyo Bay. It was remodeled as a public garden on the site of a villa belonging to the ruling Tokugawa family in the 17th century.