The garden area here is laid out around a large pond inhabited by turtles, carp and ducks and other birds. Kiyoumi Gardens is best known for its collection of exotic landscape stones gathered from around Japan, many of which are used to create stepping-stone pathways through shallower areas of the pond. An attractive teahouse sits at one end.

The azaleas, irises and hydrangeas are generally at their best in May and June. The garden was first laid out in 1878 by the founder of Mitsubishi Corporation as a place to entertain business guests; it was given over to the city of Tokyo in 1932.