|Structure||5 levels, 7 stories|
|Admin's Rating||★ ★ ☆ ☆ ☆|
|Location||Nisshin, Aichi Pref.|
|Access||Nisshin Sta. (Meitetsu Toyota Line); 10 min bus|
|Website||Iwasaki Castle Homepage|
|Notes||Pictures by Guillaume H.|
It is not known exactly when this castle was constructed, but it is was most likely built by Oda Nobuhide (Nobunaga's father) to help protect his Eastern borders. In 1529, Matsudaira Kiyoyasu (Ieyasu's grandfather) attacked Iwasaki Castle and took control. When Kiyoyasu was assassinated in 1535 by one of his retainers, Abe Masatoyo, Ieyasu's father Hirotada ascended to the control of the Matsudaira clan. The family itself withdrew from Iwasaki Castle and placed their retainer Niwa Ujikiyo in charge. Four generations of Niwa ruled for approximately 60 years until the Battle of Sekigahara.
Iwasaki Castle actually fell to the Toyotomi forces led by Ikeda Tsuneoki in the Battle for Iwasaki (1584) during the Battle of Komaki and Nagakute. Niwa Ujitsugu, the castle lord at that time, lost his brother Ujishige and many warriors. In the Battle of Sekigahara, Niwa fought for the Tokugawa and was given lands in modern day Toyota City for his allegiance. Iwasaki Castle was then abandoned.