Tonbori Castle (Tanba)

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It is said that Tanba-Tonborijō was erected as an early satellite fortification of Kuroijō by Akamatsu Sadanori. This is uncertain. However, the site was later the fortified residence of Ogino Iyomori in the Sengoku Period. In 1554, Ogino Iyomori was killed at Tonborijō by Ogino Naomasa (also called Akai Naomasa) who then became lord of Kuroi Castle. It may be that Tonborijō was abandoned at this time. Tonborijō was built on the eastern edge of a hill in the plain, with a trench cut in the west to protect its flank. It is thought that the castle possessed a yagura (turret).

Visit Notes

The ruins of Tonborijō, which consist of some earthworks and augmented natural terrain, is now dominated by a complex of modern structures, including an Italian restaurant, overlooking the surrounding countryside. There is a large stone marker proclaiming the site, and I spied some dorui (earthen ramparts) and what looked like a karabori - though not advisable to descend. The road cuts through the dorui. The shape of the terrain has been altered in modern times, obscuring the castle's footprint.

  • Kuroi Castle Mount as seen from near Tonbori Castle
  • Site Marker

Castle Profile
English Name Tanba Tonbori Castle
Japanese Name 溜堀城
Alternate Names 留堀城
Founder Akamatsu Sadamori; Ogino Iyomori
Year Founded Medieval Era
Castle Type Fortified Manor
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Karabori, Dorui
Features trenches
Visitor Information
Access Ichijima Station on the Fukuchiyama Line; 30 minute walk
Visitor Information Free; 24/7
Time Required 20 minutes
Location Tanba, Hyogo Prefecture
Coordinates 35° 11' 49.60" N, 135° 6' 44.71" E
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Added to Jcastle 2021
Contributor ART
Admin Year Visited Viewer Contributed
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