Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Sakunami Onsen is a scenic hot spring resort district situated approximately 25 kilometres northwest of central Sendai in Miyagi Prefecture, nestled along the Hirose River valley where chloride-rich thermal waters have attracted city visitors for over a century as a beloved urban retreat. The sodium-chloride mineral composition of Sakunami's springs is prized in Japanese onsen culture for its warming, circulation-enhancing, and skin-conditioning properties, making this an accessible escape for the residents of Japan's largest Tohoku city throughout the year. Surrounded by maple trees that transform the valley into a blaze of autumn colour each October, Sakunami Onsen is particularly celebrated as one of Tohoku's finest foliage destinations, where the seasonal landscape perfectly complements the restorative qualities of its mineral waters.
Insider tip — Sakunami Onsen lines the gorge of the Hirose River just 30 minutes from central Sendai, making it one of Tohoku's most accessible mountain retreats. The salty water is concentrated enough to leave skin supple for hours. Riverside rotenburo baths let bathers watch the torrent below while soaking. The maple-lined valley road is a famous autumn foliage drive, best enjoyed by arriving via the Senseki Line and walking upriver.