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.
Clear water with a faintly bitter taste. Known for holding heat.
Turns reddish brown as the iron meets air. The water is clear at the source.
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
42.4951, 141.1441 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.