Isshiki Castle (Suruga)


SurugaIsshikijou (1).JPG


Isshikkijō is subject to much speculation but nothing is known for sure. Its history seems tied to that of nearby Nagakubojō (Nagakubo Castle), though whether it was built as a satellite fortification of that castle or as a fort to besiege it is unknown. It is said the castle was first built by the Hayashi Clan, vassals of the Imagawa Clan, and was later used by Toyotomi forces during the Odawara campaign.

Visit Notes

Isshikkijō of Suruga Province is an earthworks fort ruin situated on a small plateau. Ruins include dorui (earthen ramparts) and a karabori (dry moat), and these can be seen from the rear of the site where there is a footpath. I get nervous whenever there is a footpath in a karabori because one wonders if it isn’t some subsequent cutting to create a pass, but the karabori continues and becomes a tatebori (falling moat) even as the path turns off around a bend. The bailey above is surrounded by dorui. I could see that by poking my head in from the koguchi (gate site), but one cannot actually enter the bailey itself as it is private property used as farmland.

  • Karabori

Castle Profile
English Name Isshiki Castle (Suruga)
Japanese Name 駿河一色城
Alternate Names 南一色城
Founder Hayashi Clan
Year Founded Medieval Era
Castle Type Hilltop
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Karabori, Dorui, Kuruwa
Features trenches
Visitor Information
Access Nagaizuminameri Station on the Gotenba Line; 20 minute walk; or, park at shrine to the east.
Visitor Information Access Limited; Private Property
Time Required 20 minutes
Location Nagaizumi, Shizuoka Prefecture
Coordinates 35° 9' 22.18" N, 138° 53' 37.28" E
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Added to Jcastle 2023
Contributor ART
Admin Year Visited Viewer Contributed
Friends of JCastle
Jōkaku Hōrōki
Oshiro Tabi Nikki

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