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Showa Onsen

Osaka, Osaka Prefecture, Japan
Showa Onsen
Location
Osaka, Osaka Prefecture, 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

Showa Onsen in Amagasaki, Hyogo prefecture, Japan, draws its name from the Showa era (1926-1989) of the Emperor Hirohito, a period of extraordinary transformation for Japan from militarism through devastation to economic miracle, and represents the urban hot spring culture of the Hanshin Industrial Zone — the densely urbanized corridor between Osaka and Kobe along Osaka Bay where heavy industry, port facilities, and dense residential neighborhoods create the distinctive working-class urban fabric in which neighborhood sento and onsen have historically served the bathing and social needs of factory and dock workers. Amagasaki, historically a major center of steel, textile, and chemical production, developed a rich neighborhood bathing culture served by the public sento and local onsen establishments that provided the daily bathing facility unavailable in the small worker apartments characteristic of Japanese industrial urban housing. The bicarbonated simple carbonated mineral waters of the Showa Onsen provide a distinctly mineral therapeutic quality to the neighborhood bathing tradition of this Osaka Bay industrial city.

Insider tip — Showa Onsen is an Osaka neighborhood bath with bicarbonate-rich water that gives a notably smooth, almost soapy feel on the skin — a quality locals call bihada-no-yu, or beauty-skin water. The carbonated bicarbonate combination at this urban facility creates fine bubbles that cling to skin and stimulate microcirculation. The retro Showa-era interior design, with its aged tiles and wooden lockers, provides a window into the daily bath culture that shaped postwar Japan. Evenings after 20:00 attract the quieter regulars who come to unwind after work.
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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).