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Hongo onsen

Miyoshi, Hiroshima, Japan
Hongo onsen
Location
Miyoshi, Hiroshima, Japan
Water type
thermal
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Balancing
LowHigh

Rich in trace elements — gentle on the skin.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesCalcium

Hongo Onsen in Hongo Town, now part of Fukuyama City, Hiroshima Prefecture flourished during the 1960s as a thermal resort destination with twelve active inns, but by 2016 all of its ryokan establishments had closed permanently, leaving the buildings to decay as ruins in a process that has made this former hot spring resort one of the more poignant examples of rural onsen decline in Japan's postwar demographic and economic transformation. The spring's simple thermal waters once supported a community of thermal bathing culture in this corner of Hiroshima Prefecture, but the combination of rural depopulation, aging infrastructure, and the shift of leisure spending patterns toward urban and international destinations gradually eroded the economic foundation that had sustained Hongo Onsen's dozen inns through the high growth decades of the Japanese economic miracle. Hongo Onsen today stands as a memorial to the extraordinary spread of thermal bathing culture across Japan during the postwar period and to the subsequent contraction of rural onsen communities that has left dozens of formerly thriving hot spring resorts as ghost landscapes, where the volcanic spring water continues to rise unchanged from the earth while the human institutions built around it have quietly disappeared.

Insider tip — Hongo Onsen in the Chugoku highlands near Miyoshi offers gently alkaline thermal waters that emerge clear and almost odorless, celebrated locally as bijin-yu for their reputed cosmetic effect on skin tone. The Hongo valley retains a deeply rural character, with cedar plantations climbing the ridgelines above small paddy farms that have worked the same terraces for centuries. The bathhouse, a plain cedar-paneled affair, is a favorite with older Hiroshima residents on weekend retreats from the city. A short hike to the Sandankyo gorge after bathing rewards with waterfalls and autumn maples of extraordinary intensity.
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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 thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).