Foot onsen
- Location
- Beppu, Oita, Japan
- Water type
- sulfurous
- Temperature
- 42 °C
- pH
- 6.5
Water profile
Relaxing — deep, immediate muscle release.
Rich in active gases or metals — a strong mineral character.
Soft water — natural, classic buoyancy.
Beppu, in Oita Prefecture on the island of Kyushu, produces more geothermal water than almost any other city on earth — a fact that has shaped every aspect of local life, from cooking to bathing to the famous spectacle of the hells (jigoku). This public foot onsen (ashiyu) in Beppu is one of the city's many free open-air foot baths, a democratic expression of Beppu's philosophy that the earth's heat belongs to everyone.
The water is intensely sulfurous, with the unmistakable mineral sharpness of Beppu's volcanic source, and flows at 42 °C — hot enough to draw a sharp intake of breath as tired feet make contact, then deeply satisfying as the warmth spreads upward. The mildly acidic pH of 6.5 is characteristic of sulfur springs throughout Kyushu. Sitting at a stone bench, feet submerged, watching steam rise over the rooftops of Beppu, is one of those simple and irreducibly pleasurable travel moments that the city has been offering strangers, free of charge, for longer than anyone can remember.