
Photo: 663highland · CC BY 2.5 · Wikimedia Commons
Shibu Onsen is a hot spring town in Nagano, Japan. Officially the water is classed as chloride spring. 35 inns take visitors here.
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Figures from the town's Japanese Wikipedia article.
36.7344, 138.4331 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.