Ōno Castle (Chikuzen Province)
大野城 (筑前国)
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Our guide
Ōno Castle was an ancient Korean-style mountain fortress straddling the cities of Ōnojō and Dazaifu and the town of Umi in Fukuoka. Its ruins became a National Historic Site in 1932 and a Special Historic Site in 1953, and the protected area was enlarged in 2012. The city of Ōnojō takes its name from the castle, although about 80% of the site lies in Umi.
Mizuki Castle is about 2.9 km away, Dazaifu Tenmangu about 3.1 km and Kyushu National Museum about 3.6 km. We have not checked the paths or a public-transport route, so look for local information before you go.
Written by japan-spots.com (2026-09-22) from the sources credited on this page. Distances are straight lines between map positions.
Photos
Photos from Wikimedia Commons, each under its own licence — see credits
- Hyakken-Ishigaki stone wall (one of the Onojo-Castle ruins) — Heartoftheworld · CC BY-SA 3.0 · source · resized
- 大野城（筑前国）太宰府口 — 小池 隆 · CC BY 3.0 · source · resized
- 大野城（筑前国）増長天地区 — 小池 隆 · CC BY 3.0 · source · resized
- 大野城（筑前国）主城原 — 小池 隆 · CC BY 3.0 · source · resized
- Oonojou — Tast at Japanese Wikipedia · CC BY-SA 3.0 · source · resized
- Ko-ishigaki Stonewall(one of the Onojo-Castle-Ruins) — Heartoftheworld · CC BY-SA 3.0 · source · resized
- Kita-ishigaki Stonewall(one of the Onojo-Castle-Ruins) — Heartoftheworld · CC BY-SA 3.0 · source · resized
What this place is
Ōno Castle (大野城, Ōno-jō) was an ancient castle (also known as a Korean-style fortresses in Japan (朝鮮式山城, Chōsen-shiki yamajiro) straddling the border of the cities of Ōnojō and Dazaifu, and the town of Umi, Fukuoka Prefecture Japan. Its ruins have been protected as a National Historic Site since 1932, and raised to a Special Historic Site since 1953 with the area under protection expanded in 2012. The name of Ōnojō City comes from this castle; however, approximately 80% of the castle area is within the boundaries of Umi Town.
Background text from Wikipedia (CC BY-SA 4.0)
What to expect at this type of place: Castle
Getting there
We do not have step-by-step transit directions for this spot yet. Open the location on Google Maps for routes from where you are staying.
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