
Photo: Suikotei · CC BY-SA 4.0 · Wikimedia Commons
Tsumagoi Onsen is a hot spring town in Gunma, Japan. The water leaves the ground at 37.1°C, comfortably warm. It measures pH 6.5–6.9 — close to neutral. Officially the water is classed as bicarbonate spring. Its sources put out around 172 litres a minute. 1 inns take visitors here with room for about 20 guests.
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
From Wikimedia Commons. Tap a photo for the photographer and licence.
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.