According to the
Heian period Engishiki a
Shinto shrine, the
Haritsuna Shrine was moved to make way for the castle. The structure was rebuilt several times in the
Muromachi period and the current configuration was largely the work of
Oda Nobukatsu,
Oda Nobunaga's son. The antiquated architectural style of the watchtower atop the
tenshu has in the past led many historians to believe this to be the oldest extant
tenshu in Japan, which was confirmed through tree rings in the construction materials dating the structure to the 1580s. Construction and renovations continued through 1620. Inuyama Castle was the final obstacle against Oda Nobunaga's unification of
Owari Province. After Nobunaga had defeated the
Imagawa clan at the
Battle of Okehazama in 1560, his cousin, Oda Nobukiyo, seized Inuyama Castle with the support of
Saito Yoshitatsu on
Mino Province. Nobunaga recaptured the castle in 1564. After Nobunaga's death,
Toyotomi Hideyoshi appointed Ishikawa Sadakiyo as castellan of Inuyama. Ishikawa rebuilt the defenses of the castle in line with contemporary designs and the current shape of the donjon is a result of this reconstruction. After the
Battle of Sekigahara, the victorious
Tokugawa Ieyasu expelled the Ishikawa clan and turned the castle over to
Owari Domain. Under the
Tokugawa shogunate, the castle was governed by the
Naruse clan, who ruled as
daimyō of
Inuyama Domain as vassals of the Owari Tokugawa clan until the
Meiji restoration. The new
Meiji government seized Inuyama Castle in 1871 and destroyed all of its auxiliary buildings except for the
tenshu; however, after the castle was damaged in the
Great Nōbi earthquake, and it was returned to the Naruse family in 1895, on the condition that they repair and maintain it. The castle was thus unique in Japan in that it was privately owned. In 2004, ownership of the castle was turned over to a non-profit foundation set up by the Aichi Prefecture's Board of Education. It was long believed that the
tenshu of Inuyama Castle was moved to the castle from
Kanayama Castle in 1599, until such theory was disproved as a result of examination through a large scale restoration work, involving the dismantling of the
tenshu, carried out between 1961 and 1965. Inuyama CastleKeep Tower in 1937.jpg|A view of the castle, taken in 1937 Inuyama Castle and Kiso River.JPG|Inuyama Castle and Kiso River Inuyamajouka1.jpg|Castle Town Inuyamajo2.JPG|Inuyama Festival Inuyamamatsuri1.jpg|Inuyama Castle and
karakuri float Inuyamamatsuri.JPG|Karakuri float Inuyama castle front gate.jpg|Tenshu front entrance ==Castle Rulers==