Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
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Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Tendo Onsen is inextricably linked to shogi — the Japanese chess for which this Yamagata city produces over 95% of Japan's handcrafted wooden pieces — and the therapeutic sulfurous hot spring water fills ryokan baths in a town that celebrates its craft identity through famous live human shogi matches played in the streets each spring. The sulfurous mineral water, valued for skin conditions and general recuperation, has sustained an onsen tradition here for centuries alongside the exacting wood-carving artisan culture that defines Tendo's economy and character. This unique convergence of therapeutic volcanic water and world-class traditional board game craftsmanship makes Tendo one of Japan's most culturally specific and unexpectedly charming onsen destinations.
Insider tip — Tendo Onsen in the Mogami basin is renowned throughout Japan as the center of shogi (Japanese chess) piece craftsmanship, producing over 95% of the country's professional-grade pieces. The sulfurous spring water at 42°C carries a delicate milky tinge that local tradition credits with softening both skin and the mind for strategic thinking. The famous Human Shogi event each April sees costumed participants recreate a life-size shogi match on the Maizuru Park grounds. Ryokan guests are often offered shogi sets in their rooms as part of the cultural experience.