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Fukaya Onsen Saitama

Fukaya, Saitama Prefecture, Japan
Fukaya Onsen Saitama
Location
Fukaya, Saitama Prefecture, Japan
Water type
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
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Fukaya, in northern Saitama Prefecture, is the birthplace of Shibusawa Eiichi, the nineteenth-century industrialist and social reformer whose image now appears on Japan's ten-thousand-yen banknote, celebrated as the father of Japanese capitalism for his role in establishing over five hundred modern companies during the transformative Meiji era. Fukaya Onsen Saitama draws on sodium and bicarbonate thermal waters from the deep alluvial aquifers of the north Kanto Plain, providing restorative baths in a city whose distinctive red-brick architecture — produced by the Fukaya brick kilns that supplied materials for Tokyo's historic Marunouchi district development — creates a unique visual character among the farming communities of northern Saitama. The Fukaya Flower World gardens, the Shibusawa Eiichi Memorial Museum documenting his remarkable entrepreneurial legacy, and the historic red-brick civic hall make Fukaya a culturally distinctive destination for thermal wellness.

Insider tip — Fukaya is renowned across Japan as the birthplace of Shibusawa Eiichi, the father of Japanese capitalism, and its sento draws bicarbonate thermal water at 41°C from the Kanto basin's deeper strata. The historic brick architecture that defines Fukaya's city centre, inspired by Tokyo Station's red-brick design, gives the town an elegantly retro ambiance rarely found this close to Tokyo. The bathhouse water is notably soft and pleasant on the skin. Combining the sento with a walk through the town's heritage brick district makes for a rewarding day trip from Omiya or Kumagaya.
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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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).