Kawakamikyo Onsen is a hot spring town in Saga, Japan. The water leaves the ground at 31.6°C, cool enough that the baths here are usually reheated. It measures pH 9.12 — strongly alkaline. Officially the water is classed as radioactive spring. Its sources put out around 140 litres a minute. 1 inns take visitors here.
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
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From Wikimedia Commons. Tap a photo for the photographer and licence.
With tattoos
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.