Photo: Clare lau / CC BY-SA 4.0 · Wikimedia Commons
Kaminoseki Town
Yamaguchi Prefecture · Town
Official websiteYamaguchi Prefecture page
Kaminoseki Town consists of the tip of the Murotsu Peninsula and the islands of Nagashima, Iwaishima, and Yashima in the Seto Inland Sea. An old maritime checkpoint (seki) gave Kaminoseki its name. Iwaishima keeps a village with walls of piled stones and clay, and the Kanmai Shinto ritual is held once every 4 years.
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
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).
National parks in this town
- Setonaikai National ParkTotal park area 673 km²Spans Hyogo, Wakayama, Okayama, Hiroshima, Yamaguchi, Tokushima, Kagawa, Ehime, Oita
Chosen by overlaying the park boundaries (Ministry of the Environment, Biodiversity Center of Japan, "National Park Areas" GIS data, updated April 28, 2025, combined and simplified by NIPPON ATLAS) with municipal boundaries (National Land Numerical Information, January 2021), keeping overlaps of about 0.5 km² or more (approximate). Areas are the land areas from the Ministry of the Environment, "Overview of National Parks" (April 10, 2026). All national parks
Neighboring municipalities
Municipalities sharing a boundary (computed from the National Land Numerical Information administrative boundaries, January 2021).
Other municipalities in Yamaguchi Prefecture
The description was written for this site, picking out representative features.