Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Sakunami Onsen Miyako no Yu, in Sakunami near Sendai, Miyagi Prefecture, offers sulfurous thermal water at 42°C. The facility includes an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Sakunami Onsen nestles in a cedar-forested valley of the Nishiki-garasu River, just 30 minutes from central Sendai — making it the Tohoku capital's most beloved mountain retreat. Miyako no Yu (City Spring) serves those who want to keep one foot in Sendai's urban world while soaking in genuine mountain hot springs. Sendai's Tanabata Matsuri (early August) fills the downtown shopping arcades with enormous bamboo decorations — the perfect complement to a peaceful post-festival Sakunami soak.