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Shiozawa Onsen

Shiozawa, Minami-Uonuma, Niigata (Chubu), Japan
Shiozawa Onsen
Location
Shiozawa, Minami-Uonuma, Niigata (Chubu), Japan
Water type
bicarbonate
Temperature
40 °C
pH
8

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
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Shiozawa Onsen lies in a historic Echigo post town whose Shiozawa Tsumugi — a lustrous handwoven silk textile of exceptional quality produced from Tochigi silk threads twisted by hand and woven on hand-operated Takahata looms — shares with the Ojiya chijimi a joint UNESCO Intangible Cultural Heritage inscription for the remarkable textile traditions of the Uonuma snow country, where the long winter months historically provided artisans with the concentrated time and humidity required to perfect these demanding weaving techniques. The historic Mikuni Kaido highway district of Shiozawa preserves Edo-period street architecture of unusual integrity, its traditional snow-country merchant houses with their distinctive heavy rooflines and continuous covered walkways (gangi) creating a pedestrian-friendly historic streetscape that gives visitors an atmospheric experience of Japan's snow-country merchant culture. The onsen's siliceous mineral waters provide restorative bathing in a post town whose silk weaving heritage and historic architecture represent two equally refined expressions of the creative possibilities that deep winter and disciplined craftsmanship have produced in the Uonuma snow country over four centuries.

Insider tip — Shiozawa Onsen lies in the historic weaving town of Shiozawa in Minami-Uonuma, where the production of Shiozawa tsumugi silk has continued unbroken for over 1200 years. The bicarbonate thermal waters emerge where the Uono River valley narrows against the Echigo Mountains, providing relief from the physical demands of traditional loom work. The surrounding snowfields fed by the Japan Sea's moisture produce the finest koshihikari rice in Japan, and onsen menus reflect this agricultural pride. A soak here connects bathers to one of Japan's most enduring cultural landscapes.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).