Maruyama Douen Castle

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The construction date of Maruyama-Dōenjō is not known, but in the middle 15th century it was the residence of Maruyama Nakatsukasa. Lord Maruyama is known as one of the ringleaders of the 1465 Nukata County Rōnin Rebellion. Somewhat unusually, Dōenjō was pentagonal in shape, making use of a small tributary river of the Otogawa in the south; the ramparts were about 90m in length on their longest side.

Visit Notes

What are reckoned to be the remains of the Maruyama-Dōenjō’s southern moat can still be found here on an elevated area on the northern shore of the Oto River. The site is now mostly old housing, some fields and factories. The former moat has been retained as part of a waterway, but the embankments are steepest where the castle site is known to have been. The most castle-like part looks like a damp dry moat, but running water and stagnant pools can be found along its length.


Castle Profile
English Name Maruyama Douen Castle
Japanese Name 丸山道円城
Founder Maruyama Nakatsukasa
Year Founded Mid' 15th century
Castle Type Flatland
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Karabori, Mizubori, Dorui, &c.
Features water moats, trenches
Visitor Information
Access Miai Station on the Meitetsu Nagoya Line; 22 minute walk
Visitor Information Access Limited
Time Required 15 minutes
Location Okazaki, Aichi Prefecture
Coordinates 34° 56' 1.72" N, 137° 12' 9.14" E
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Added to Jcastle 2023
Contributor ART
Admin Year Visited Viewer Contributed
Friends of JCastle
Umoreta Kojō
Aichi Shiro

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