Photo: Reggaeman / CC BY-SA 3.0 · Wikimedia Commons
Seiyo City
Ehime Prefecture · City
Official websiteEhime Prefecture page
Seiyo City stretches from east to west from the Uwa Sea to the Shikoku Karst and was formed by the merger of 5 towns. Unomachi keeps post-town streets, a Preservation District for Groups of Traditional Buildings, and the Kaimei School preserves an old elementary school building. Dairy farming is carried out on the Onogahara plateau.
Key facts
Source: Statistics Bureau of Japan, 2025 Population Census (population, area and density); area from the Geospatial Information Authority of Japan (GSI), Area Statistics of Prefectures and Municipalities (2025). National ranks are among the 1,741 municipalities, ordered by this site from these values.
Live information
Current weather (observed)
Places to visit
Historic townscapeUwacho Unomachineighborhood in Seiyo, Japan
MuseumKaimei Schoolschool in Ehime Prefecture, Japan
Buddhist templeMeiseki-ji TempleTendai Jimon temple in Seiyo, Ehime Prefecture, Japan, which is Temple 43 on the Shikoku 88 temple pilgrimage
MuseumMuseum of Ehime History and Culturemuseum in Seiyo, Ehime, Japan
HighlandOnogahara
Roadside station (Michi-no-Eki)Michi-no-Eki Donburi-kanroadside station in Seiyo, Ehime prefecture, Japan
Roadside station (Michi-no-Eki)Michi-no-Eki Kinahaiya Shirokawaroadside station in Seiyo, Ehime prefecture, Japan- CastleMitaki Castle
Chosen automatically, most popular first, from landmarks and cultural properties registered in Wikidata (we have not checked whether each is open). Names and descriptions: Wikidata (CC0); photos: Wikimedia Commons (photographer and license under each photo).
Mountains in this city
Mountains whose summit is in this municipality (mountains of 800 m or higher on this site's map, and mountains in the famous-mountain lists). Elevations from Wikidata and other sources.
Neighboring municipalities
Municipalities sharing a boundary (computed from the National Land Numerical Information administrative boundaries, January 2021).
Other municipalities in Ehime Prefecture
The description was written for this site, picking out representative features.