Aoyama Castle (Omi)




Aoyamajō was built as a satellite fortification of Ogurajō by the Ogura Clan. Search Ogura Castle (Shiga) for more information. The site is now forest and tanuki nesting grounds.

Visit Notes

Aoyamajō is a forested earthworks castle ruin in Higashi-Ōmi. It is a hirayamajiro type, gakejiro subtype castle, meaning that the castle was built overlooking a steep change in elevation – a cliff – on one side, and on its three other sides where the terrain was flat earthen ramparts were heaped up and dry moats dug. These earthworks have lasted well, with the dorui (berms) going all around the shukuruwa (main bailey) except where it borders the cliff side, and deep karabori (dry moats) making the castle ruins quite clear. The karabori become tatebori (climbing moats) where they meet the cliff line and fall. The shukuruwa is now rather over-grown. I found many tanuki (raccoon-dog) burrows dug into the ramparts, and, sure enough, a tanuki appeared nearby.

  • karabori

Castle Profile
English Name Aoyama Castle
Japanese Name 青山城
Founder Ogura Clan
Year Founded Sengoku Period
Castle Type Hilltop
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Dorui, Karabori, Tatebori, Kuruwa
Features trenches
Visitor Information
Access Shin-Yōkaichi Station on the Ōmi Rail Man'yo-Akane Line; 15 minute drive or 100 minute walk
Visitor Information Free; 24/7; Forest
Time Required 30 minutes
Location Higashi-Oumi, Shiga Prefecture
Coordinates 35° 5' 48.19" N, 136° 16' 3.94" E
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Added to Jcastle 2021
Contributor ART
Admin Year Visited Viewer Contributed
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