A dry sauna with overwhelming heat, reaching 110°C and sometimes nearly 120°C. Using a Finnish stove and sauna stones collected from the seabed, it envelops the body in dry, powerful heat. The three-tiered interior has large windows, allowing you to face the limits of heat while gazing out at the garden. It offers a one-of-a-kind sauna experience, blending Showa retro charm with authentic specifications.

A refreshing cold plunge bath blended with groundwater and municipal water in perfect balance. With constant overflow circulation, the water is always kept fresh and clear. The crisp coldness at around 15°C sharply tightens a body heated by the ultra-high-temperature sauna, delivering a brisk and invigorating cooldown. Thanks to its pleasant texture and meticulous hygiene management, you can enjoy alternating hot-and-cold bathing to your heart's content.