Onago Battery

Only remnants of the Onago Battery remain today, but its earthworks are still partially visible. The site is marked and recognized as part of Hagi’s wider historical coastal defense system. It is located a short distance from central Hagi and can be reached on foot or by bicycle along the scenic coa

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History

The Onago Battery was one of several coastal artillery fortifications built as part of a defensive network along the Sea of Japan. Constructed in response to the increasing presence of Western ships, it held several large cannon emplacements. The name “Onago” or “Women’s Battery” is said to originate from local accounts that women of the town played a significant role in its construction while the men were away fighting in other battles.

Field Notes

Only remnants of the Onago Battery remain today, but its earthworks are still partially visible. The site is marked and recognized as part of Hagi’s wider historical coastal defense system. It is located a short distance from central Hagi and can be reached on foot or by bicycle along the scenic coastline.

Refer to Hagi Castle Town for more details.

Gallery

Castle Profile
English Name	Onago Battery
Japanese Name	女台場
Founder	Choshu Domain
Year Founded	1850s
Castle Type	Hilltop
Castle Condition	Reconstructed main keep
Designations	National Historic Site
Historical Period	Edo Period
Features
Visitor Information
Access	Cycle or walk from downtown Hagi
Hours	park, open any time
Time Required	15 mins
Location	Hagi, Yamaguchi Prefecture
Coordinates	34.41617, 131.39197
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Admin
Added to Jcastle	2025
Contributor	Eric
Admin Year Visited	2024
Admin Visits	March 20, 2024

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