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Shima Onsen Kashiwaya Ryokan

Nakanojo, Japan
Shima Onsen Kashiwaya Ryokan
Location
Nakanojo, Japan
Water type
sodium chloride
Temperature
45 °C
pH
7.1

Water profile

Thermicity
Sedative
45 °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.

ChlorurePotassiumSodiumMagnésium

Shima Onsen is a historic hot spring town on the Nakatsu river in the mountains of Gunma, designated a national health resort and set in a narrow gorge of great natural beauty where chloride-rich volcanic water from multiple sources fills the atmospheric wooden ryokan that line the traditional onsen street unchanged since the Meiji era. The Kashiwaya Ryokan is one of Shima's most celebrated traditional inns, offering the complete Japanese hot spring hospitality sequence of seasonal kaiseki cuisine, carefully prepared mineral baths, and yukata-clad evening strolls through the lantern-lit gorge town. Shima's therapeutic tradition dates back over 1,300 years, and the preserved wooden bathhouses and ryokan facades of its traditional street create one of Gunma's most atmospheric and photographically rewarding historic onsen townscapes.

Insider tip — Arrive early in the morning at Shima Onsen Kashiwaya Ryokan to enjoy the calm and the chloride waters.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 45 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Décembre|Janvier|Février.