Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
In Fukaya, Saitama Prefecture, Hanayu no Mori draws sodium-chloride water at 41°C. The onsen offers an indoor bath, an outdoor rotenburo and a sauna, a classic Japanese setting for unwinding.
Insider tip — Fukaya Hanazono Onsen Hanayu no Mori is a flower-themed hot spring complex in Fukaya, Saitama, famous for its deep-drilled saline water and sprawling garden bathhouse. The name 'flower hot water forest' reflects the landscaped setting with seasonal plantings around the outdoor baths. Fukaya is birthplace of Shibusawa Eiichi, the father of Japanese capitalism, and this onsen celebrates local pride with high-quality facilities. The sodium-chloride water is especially effective after the cold winters on the Kanto Plain.