Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Sosanji Onsen Kashikiri Rotenburo Honoka no Yu Kaeda Branch is located in Miyazaki, in the eponymous prefecture. Its sodium-chloride water reaches 41°C and is split between an indoor bath and an outdoor rotenburo, with a sauna.
Insider tip — Miyazaki is Japan's sunshine coast, warm enough for palm trees and winter training camps for pro baseball teams. The Honoka no Yu Kaeda Branch offers private open-air rotenburo (kashikiri) — a semi-outdoor soak in subtropical warmth.