Iyashi no Yu Kazoku Onsen; Sansui

Kirishima, Kagoshima, Japan

Illustration photo — not a verified picture of this exact spot.

Location: Kirishima, Kagoshima, Japan
Water type: thermal, sodium chloride
Temperature: 40 °C
pH: 7.3

Water profile

Thermicity

Sedative

40 °C

LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation

Restorative

LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy

Effortless float

LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

A traditional onsen experience is a serene and rejuvenating cultural ritual, where individuals unwind and connect with nature. Guests typically follow a set of established customs, including the removal of shoes and clothing, and the use of private changing areas. Bathing is often a solitary and introspective experience, allowing individuals to relax and recharge in a tranquil atmosphere. Social interaction may occur in designated areas, fostering a sense of community and shared experience.

Insider tip — 'Sansui' (山水 — mountain water) at Iyashi no Yu Kazoku Onsen in Kokubu, Kirishima city. 'Iyashi no Yu' (癒しの湯) = healing spring — the name of Japan's entire contemporary wellness bath culture in four characters. Kirishima city encompasses both this urban Kokubu plain and the dramatic volcanic Kirishima range above. The 'mountain water' name evokes the journey that geothermal spring water makes from the volcanic heights to this family bath on the Kagoshima coastal plain.

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