Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Kure Onsen is located in Kure City, Hiroshima Prefecture, a port city with one of Japan's most important naval and maritime heritage legacies, where the Yamato Museum honors the battleship Yamato — the world's largest battleship ever built, constructed at Kure Naval Arsenal — and the adjacent JMSDF Kure Museum presents an actual decommissioned submarine. The siliceous thermal waters here offer restorative bathing in a city where Japan's industrial and military history is preserved with remarkable depth and honesty, alongside a vibrant seafood culture centered on the city's Kure fish market. Bathing at Kure Onsen provides both physical renewal and a connection to the complex industrial and naval heritage of a city that continues to reinvent itself while honoring its extraordinary maritime history.
Insider tip — Kure Onsen serves the historic naval port city that once housed Japan's largest warships, including the battleship Yamato, now commemorated in a detailed museum at the harbour. The bicarbonate spring water is calm and alkaline, a soothing contrast to Kure's industrial and military heritage. The waterfront location means some facilities offer views across Hiroshima Bay toward the island-studded Seto Inland Sea. The city's obsession with navy curry, a local culinary institution, makes dinner after the bath a uniquely Kure experience.