Igawa Castle

Igawa Castle is a fortified site near Matsumoto with remains of defensive trenches and an artificial mound that once supported a tower structure. The layout shows a flat-land castle design without natural elevations.

The site was founded in 1334 when Ogasawara Sadamune was appointed Governor of Shinano Province. It served as a fortified residence reflecting the authority of the regional ruler.

The site displays traditional Japanese defensive architecture through its flat-land design, representing the hirajiro style of castle construction. This building approach shaped regional defense concepts across multiple centuries.

The castle grounds sit about 10 minutes on foot from Nishi-Matsumoto Station on the Kamikouchi Line and remain open for visits throughout the day. The flat terrain makes exploring straightforward without steep inclines.

The site was chosen for its location near abundant water sources that provided natural protection and sustained the residents during medieval times. This strategic use of water resources was crucial for the settlement's endurance.

Location: Igawajō

Inception: 1334

Founders: Ogasawara Sadamune

Part of: Ogasawara clan castle sites

GPS coordinates: 36.22231,137.96456

Latest update: December 13, 2025 17:08