Being the site of Konodai Castle, Satomi Park was also the site of the Battles of Konodai fought twice between the local Satomi Clan (ruler of Awa Province in present-day Chiba) and the invading Hojo Clan (from Odawara) in the 16th century.

The Hojo won the final battle and thereby took control of present-day Chiba. The Hojo is said to have expanded and reinforced Konodai Castle.
However, when Tokugawa Ieyasu took control of Japan, he had Konodai Castle dismantled because it had a intimidating view of his own Edo Castle.