Overview
The Mikumo–Iwara Site is a large Yayoi-period settlement spread across the Mikumo and Iwara districts of Itoshima City, Fukuoka Prefecture. Widely regarded as the heart of the ancient Ito kingdom, it includes the Mikumo-Minamishoji Site with its royal burials. Designated a National Historic Site in 2017, it preserves the footprint of an early Japanese polity that flourished near the Genkai Sea.
Highlights
- ●Yayoi settlement identified as the center of the Ito kingdom
- ●Includes the Mikumo-Minamishoji Site with royal-type burials
- ●National Historic Site designated in 2017
- ●Set on the Itoshima Plain near the Genkai Sea
History
Throughout the Yayoi period this area grew into a central settlement and served as a gateway for exchange with the Asian continent, believed to be the royal seat of the Ito kingdom. At the Mikumo-Minamishoji Site in particular, jar-coffin burials thought to belong to rulers point to a powerful elite. Long-term excavations revealed the extent of both settlement and burial grounds, leading to National Historic Site designation on October 13, 2017.
Access
The site lies in the Mikumo and Iwara districts of Itoshima City, on the Itoshima Plain at roughly 33.54°N, 130.25°E. It is reachable from central Itoshima and stations on the JR Chikuhi Line, but because the remains are scattered outdoor features, check current viewing routes and access through official information before visiting.
Best season
Since visiting means walking among open-air ruins, the mild days of spring and autumn are most comfortable. Pairing the visit with the rural scenery of the Itoshima Plain gives a real sense of the land where this Yayoi polity took shape. Bring sun protection in summer and warm clothing in winter.
Map
33.5386, 130.2452 · Wikidata
Suggested itinerary
- 1Head from central Itoshima toward the Mikumo and Iwara districts
- 2Walk the preserved site area to grasp the scale of the Ito kingdom
- 3See burial-related features such as the Mikumo-Minamishoji Site
- 4Round off with the Itoshima Plain scenery and related facilities
Did you know?
💡 The Ito kingdom is recorded even in the Chinese chronicle Records of Wei, and the Mikumo–Iwara Site is one of the leading candidates for its royal capital. The very name Itoshima carries the memory of this ancient polity into the present day.
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