A natural oasis near Sapporo, Toyohirakyo Onsen is a day spa with 100% free-flowing hot-spring water and specialty Indian curry.

The onsen does not use water to control the temperature or reheat the water, but rather allows the spring water to pour into the bathtub as it is.
At first glance, it is rare, and it is said that only a few percent of the tens of thousands of hot spring facilities exist.
Toyohirakyo no Yu is the only hot spring in Sapporo that does not use a hot water storage tank, but pours the spring water directly from the ground into each bathtub, so it is never exposed to the air. The hot water does not require any chlorine or other chemicals, so the quality of the spring never changes and the efficacy is high.