Kururi Castle

Kururi Castle is a historic hilltop-style Japanese castle located in Kimitsu, Chiba Prefecture, Japan. Originally constructed in 1456 as a mountain-top fortification by Takeda Nobunaga during the Muromachi period, the site holds significant strategic importance. It sits atop a 227-meter hill and was famously known as "Rain Castle" due to a local legend claiming it rained twenty-one times during its initial construction. Throughout the Sengoku period, the castle changed hands between the powerful Satomi and Hōjō clans, serving as a critical base for Satomi Yoshitaka's operations against his rivals before eventually falling under Tokugawa influence.

Following the Battle of Odawara in 1590, the castle became the center of the Kururi Domain. It was significantly expanded by Matsudaira Tadamasa, who established a castle town at its base. Although the domain was temporarily suppressed in 1679, it was reinstated in 1742 under the Kuroda clan, who ruled until the Meiji Restoration. The original structures were demolished in 1872 by order of the new Meiji government, leaving only earthworks, moats, and a well. The site was converted into a public park in 1955 to preserve these historical remnants.

In 1979, a reconstructed main keep was built adjacent to the original foundation to promote local tourism. While the Edo-period donjon was a two-story structure, the modern reconstruction serves as a museum and observation point rather than a historically accurate replica. Today, Kururi Castle remains open to the public, offering visitors a glimpse into the region's feudal past amidst the natural landscape of southern Chiba. The site stands as a testament to the turbulent history of the Kantō region, blending ancient earthworks with modern commemorative architecture.