Mukōjima-Hyakkaen Garden is an urban garden located in Sumida, Tokyo. The garden was created by a merchant, and is different from daimyō gardens, and therefore it not a "traditional Japanese garden" in the proper sense of the term. It is the only surviving flower garden from the Edo period. Mukōjima comes from the region's old name, Hyakkaen was chosen to mean "a garden with a hundred flowers that bloom throughout the four seasons". The garden covers an area of about 10,886 m2.