Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Ayase, in the central Kanagawa Prefecture plain between Yokohama and Sagamihara, is a suburban city known for its Self-Defence Force Atsugi Naval Air Facility and the traditional agricultural landscape of the Sakai River valley, a community that has balanced military base proximity with suburban residential development in the broad Kanagawa plain. Ayase Onsen Kanagawa draws on chloride-rich thermal waters from the geological resources of the Kanagawa coastal plain, offering warm restorative baths in a suburban community whose Self-Defence Force heritage, agricultural plain setting, and convenient rail access to Yokohama and Shinjuku create a practically located and accessible spa destination. The Atsugi Naval Air Facility air shows held periodically for the public, the Sakai River cycling paths through the flat Kanagawa suburban plain, and the easy Odakyu Line access to central Yokohama and the Shinjuku-Odawara rail corridor make Ayase a conveniently located suburban spa retreat in central Kanagawa Prefecture.