Hama-rikyu Onshi Teien Gardens is a waterfront garden built by the Tokugawa shoguns in the 17th century.

During the Meiji Period, it became a Detached Palace for the Imperial family who gave the garden to the Tokyo in 1945. It used to have duck-hunting grounds. It was also the site of the Enryokan State Guesthouse where foreign dignitaries stayed such as former US president Ulysses Grant and Hawaii's King David Kalakaua.