Photo: 松岡明芳 · CC BY-SA 3.0 · Wikimedia Commons
Yokawa Onsen is a hot spring town in Hyogo, Japan. The water leaves the ground at 32.2°C, cool enough that the baths here are usually reheated. Officially the water is classed as chloride spring and bicarbonate spring. Its sources put out around 50 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.
34.8847, 135.1222 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.