Kasaoka City is a town in southwestern Okayama Prefecture, along the Seto Inland Sea and bordering Fukuyama City in Hiroshima Prefecture.
The Kasaoka Islands, made up of 31 islands of various sizes, lie to the south. Shiraishi Odori, passed down on Shiraishi-jima Island, is designated a National Important Intangible Folk Cultural Property. Oehama is a National Natural Monument as a breeding ground for horseshoe crabs, “living fossils.” Vast reclaimed lands stretch across the area, and the town has long had close ties with the Bingo region.
