Tochigi Otawara City
An overwhelming 280 liters per minute of free-flowing source water
"Nasunogahara Onsen Hotel Aoki" is an onsen hotel in Ohtawara City that also offers day-use bathing, with an uncompromising focus on the freshness and quality of its hot spring water. The naturally self-springing alkaline simple hot spring from underground boasts a generous flow rate of 280 liters per minute and is served as a completely 100% natural free-flowing spring, with no heating, dilution, or recirculation at all. It is fully equipped with a sauna and cold plunge bath. This is the ideal environment for totonou, where the genuine power of hot springs blends with the variety of sauna and cold plunge experiences.
An alkaline simple hot spring that springs from underground. It boasts an overwhelming flow of 280 liters per minute and is served as a completely natural 100% free-flowing spring with no heating, dilution, recirculation, or filtration. The soft, high-pH water is well known as a beauty bath that leaves the skin moist and smooth, and the exquisite bathhouse lets you savor the rich natural minerals and freshness of the onsen with all five senses.
A high-temperature dry sauna adjacent to the indoor public bath, known for its powerful heat. The high-temperature setting encourages deep perspiration efficiently in a short time. In a calm indoor space filled with the scent of wood, you can work up a sweat in a truly authentic setting while choosing the heat level that suits you best.
A clean and refreshing cold plunge bath. Its exquisite temperature of around 18°C makes alternating hot and cold bathing with the high-temperature sauna even more enjoyable and helps switch your body into a deeply relaxed totonou state.
Thursday
Tochigi
A natural hot spring with free-flowing source water that leaves your skin smooth, and a steam-filled sauna
Tochigi
A large spa with an authentic scorching-hot sauna and a natural chloride hot spring
Tochigi
Premium natural hot springs with free-flowing source water and private open-air baths in every room
JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
61 SELECTIONS
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.
