Tenjin'yama Castle, Japanese castle in Nagatoro, Japan
The castle complex extends over 300 meters along a narrow mountain ridge beside the Arakawa River, featuring a central watchtower area of 20 meters.
The Fujita clan, originally from Yorii and descended from Kyoto nobles, established this fortress as their base before submitting to the Hojo clan around 1550.
The castle name reflects Japanese naming traditions, as multiple fortresses across Japan share the Tenjinyama designation, referring to mountain deities.
The fortress stands at a strategic point controlling both the Chichibu-Oukan road between provinces and the path to Kozuke province across Mase-Toge pass.
The structure represents one of the largest medieval fortifications in the Chichibu region, positioned 100 meters above the valley floor.
Location: Nagatoro
Founders: Fujita Yasukuni
GPS coordinates: 36.12026,139.11704
Latest update: March 7, 2025 13:41
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