After his death, the property was passed on to the families of his three retainers Naruse, Ishiko, and Watanabe, until the Meiji Restoration of 1867, when ownership was returned to the Owari Tokugawa.

In 2004, aiming to unite many historical inheritances found in the region, the garden, a sanctuary of modern samurai culture representing Japan was built, along with a stroll-style pond to complete its atmosphere.

To the south of the garden, the Hōsa Library houses historical materials and documents connected with the Owari Tokugawa family.

The gate, which survived the destruction of World War II, is made out of wood and has a gable roof.

Seasonal blooms of the flowers include Japanese Apricot (ume), peony (botan), iris (hanashobu), and maple (momiji).