This is a Japanese garden built in the Edo mansion of the Mito Tokugawa family in the early Edo period, with an artificial mountain and spring water circuit. It has been designated as a national special historic site and special scenic spot.

As a representative feudal lord garden of the Edo period, it still retains its charm even today.
The park is dotted with a variety of landscapes, including a pond, tea rooms, bridges, and stone lanterns.

In spring, it is a famous spot for cherry blossom viewing.