Myōkō Kōgen Onsenkyō is a hot spring town in Niigata, Japan. Officially the water is classed as chloride spring, bicarbonate spring, sulfate spring and sulfur spring.
Chloride springBicarbonate springSulfate springSulfur spring
The water here
Chloride spring 塩化物泉
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Bicarbonate spring 炭酸水素塩泉
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
Sulfate spring 硫酸塩泉
Clear water with a faintly bitter taste. Known for holding heat.
Sulfur spring 硫黄泉
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
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.