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Inuyama Onsen Aichi

Inuyama, Aichi (Chubu), Japan
Inuyama Onsen Aichi
Location
Inuyama, Aichi (Chubu), Japan
Water type
sodium chloride, bicarbonate
Temperature
41 °C
pH
8

Water profile

Thermicity
Sedative
41 °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

Inuyama, at the northern edge of Aichi Prefecture where the Kiso River flows from the mountains of Gifu, is home to Inuyama Castle — one of Japan's five original surviving castle keeps designated as National Treasures — whose white tenshu tower has presided over the river from its clifftop since 1537, commanding sweeping views of the Kiso valley. Inuyama Onsen Aichi draws on sodium and bicarbonate thermal waters from the geothermal resources of the Kiso River valley, offering restorative baths in the historic ambiance of one of Japan's most atmospheric castle towns where traditional cormorant fishing by torchlight on the Kiso River has continued since ancient times. The Meiji Mura outdoor architectural museum preserving over sixty Meiji-era buildings relocated from across Japan, and the annual Inuyama Matsuri Festival with its elaborately decorated festival floats, make this a destination of exceptional historic and cultural depth in northern Aichi.

Insider tip — Inuyama Onsen clings to the forested banks of the Kiso River just below Japan's oldest original castle, Inuyama-jo. The bicarbonate-sodium waters leave skin silky and are reputed to soothe joint ailments. Visit during cormorant fishing season (May–October) for the unforgettable spectacle of ukai torchlight fishing viewed from the riverbank.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride & bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).