The garden was in residence of the Mito Tokugawa family. The primary lord Yorifusa started to build it, and the second lord Mitsukuni completed the construction. This pond garden, which is full of Chinese flavor, is in the go around style (Kaiyu style) with small artificial hills. It was named “Korakuen” after a Chinese phrase of “governor should worry before people and enjoy after people,” mentioned in Gakuyoroki.