Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Mano Onsen on Sado Island draws bathers to a quiet valley inland from the island's western coast, close to the Mano Imperial Mausoleum where Emperor Juntoku was laid to rest after his exile to the island in the thirteenth century. The chloride-rich spring water provides a deeply warming soak celebrated for its circulation-boosting properties, essential comfort during Sado's cold, damp winters. The area's profound historical associations, including temples and the grave of the exiled emperor, lend every visit a contemplative solemnity rare among Japan's many onsen destinations.
Insider tip — Mano sits in the tranquil center of Sado Island, historically significant as the site of Emperor Juntoku's exile in the thirteenth century. Its chloride spring feeds a small but lovingly maintained bathhouse surrounded by cedar and persimmon groves. The water temperature hovers at 40 degrees, ideal for extended soaks on cool autumn evenings when the surrounding foliage turns gold and crimson. A short walk leads to the old pilgrimage temples that dot the Mano River valley.