Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Omura Onsen Nagasaki is located in Omura City, Nagasaki Prefecture, on the shores of Omura Bay — one of Japan's most sheltered and biologically rich enclosed bays, designated as a bird sanctuary for its internationally significant migratory waterfowl populations and known for the cherry blossom festival at Omura Park, one of the most celebrated sakura viewing spots in Kyushu. The chloride-rich hot spring waters of Omura draw from the coastal geothermal activity beneath the bay's shoreline, providing warm mineral baths appreciated during the cooler months when steam rising from outdoor pools mirrors the morning mist over the bay's calm enclosed waters. Omura also holds the distinction of being the ancestral domain of Omura Sumitada, the first Japanese feudal lord to convert to Christianity in the 16th century, adding a unique historical dimension to this bay-side onsen city.
Insider tip — Omura sits on the shore of Omura Bay, the landlocked inner sea of Nagasaki Prefecture that was once a major hub of Christian daimyo culture during the Sengoku period. The hot spring waters here rise through marine sedimentary deposits, giving them their sodium-chloride character and pleasant body-warming effect. The bay's sheltered waters are famous for oyster farming, and the local cuisine pairing fresh oysters with a warm onsen soak is a distinctive regional pleasure. Spring cherry blossoms along the bay shore make March an especially beautiful time to visit.