"Gensen Nasuzan Reiwa no Yu" is a luxurious day-use hot spring facility in a pure Japanese style, set on a vast property in the Nasu Highlands. Its newly renovated private spring, refreshed in 2021, gushes forth at over 60°C in a fresh state and flows straight into the cypress large bath as 100% free-flowing spring water with no added water. The sauna is a Finnish-style dry sauna with pleasantly steady heat, letting you enjoy high-quality sweating while enveloped in the warmth of wood. The cold plunge bath uses an abundant free flow of groundwater, and the clear water of Nasu, which changes with the seasons, refreshingly tightens up your heated body after the sauna. With the fragrance of cypress over 100 years old and an elegant space finished in plaster, it is an exceptional place of relaxation where you can experience deep refreshment for both body and mind.