This main tower is small but due to its complex form, it shows different silhouettes depending on the angle.

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.

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.

In 2004, ownership of the castle was turned over to a non-profit foundation set up by the Aichi Prefecture's Board of Education.