The Koishikawa Kōrakuen (小石川後楽園) is a large urban park in the Koishikawa neighborhood of Bunkyō, Tokyo, Japan. The Japanese garden  dates from the early Edo period.[1] and is one of three surviving daimyō gardens of the many that were created during that period, the others being the Rikugi-en  and the Hama Rikyū gardens.