Mariyatsu Castle, Hill castle in Kisarazu, Japan.
The castle extends across a 600-meter ridge with clay walls, dry moats, and multiple terraces forming a strategic defensive position.
Takeda Nobunaga established Mariyatsu Castle in 1456 following orders from Shigeuji Ashikaga to control the Kazusa province during the Sengoku period.
The castle layout, with its rectangular central core of 120 by 80 meters, demonstrates the military architecture and social organization of medieval Japan.
Visitors reach the castle grounds through the Kisarazu-Higashi interchange of the Keno-Do Expressway, where a camping area now occupies the historical site.
Located between Takeda-gawa and Izumi-kawa rivers, the castle maintained communication routes across the Boso peninsula from its 100-meter elevation point.
Location: Kisarazu
Inception: 1456
Founders: Takeda Nobunaga
GPS coordinates: 35.70535,140.84764
Latest update: May 11, 2025 18:51
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