Gushikawa Castle, Historic castle ruins in Kumejima, Japan.
Gushikawa Castle is a fortified site on Kumejima with stone walls built using the Nozura technique of naturally rough masonry that rise several meters in places. The ruins spread across the terrain and reveal the layout of this military stronghold from centuries ago.
The site originated as a stronghold during the Ryukyu Kingdom era and served strategic military purposes throughout that period. Its role changed after Japan incorporated the territory in 1879, marking the end of its function as a fortified position.
The castle reflects traditional building methods of the Ryukyu Islands that visitors can still observe in the stonework today. The use of local materials shaped how people constructed their strongholds and reveals their connection to the land.
The site is roughly a 15-minute walk from Kyan Bus Stop where buses stop regularly. Wear sturdy shoes and watch your footing, as the path crosses uneven ground and stone surfaces throughout the visit.
Beneath the castle grounds lies a cave system that opens toward the sea and once served as a supply route for residents. This hidden passage reveals how people strategically used the natural landscape for their defense.
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