
Photo: Miyuki Meinaka · CC BY-SA 4.0 · Wikimedia Commons
阿曽温泉 is a hot spring town in Mie, Japan. The water leaves the ground at 27.1°C, cool enough that the baths here are usually reheated. It measures pH 6.6 — close to neutral. Officially the water is classed as chloride spring and bicarbonate spring. Its sources put out around 80 litres a minute.
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
Figures from the town's Japanese Wikipedia article.
34.3386, 136.4091 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.