During the Edo period, the park belonged to Minonokami Nambu, a feudal lord from the former Morioka Domain who used it as an urban villa.

After having expanded to include Azabu Baseball Field and tennis courts, the park's total area is currently 67,131 square metres.

The park's cascading hills and valleys, ponds, and densely wooded areas have been arranged in harmony with the natural terrain.

[citation needed] There is a heavily wooded area at the bottom with streams, waterfalls, bridges and ponds.

The park is located approximately 2 minutes' walk from Hiroo Station and is adjacent to various buildings such as the Aiiku hospital to the north, the National Azabu grocery store to the south, and the German Embassy neighboring National Azabu.