
Photo: 京都東 · CC BY 4.0 · Wikimedia Commons
Inari Onsen is a hot spring town in Gifu, Japan. The water leaves the ground at 20°C, cool enough that the baths here are usually reheated. It measures pH 7.5 — close to neutral. Officially the water is classed as radioactive spring.
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.


Figures from the town's Japanese Wikipedia article.
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.