Nagano Komagane City
The ultimate totonou experience, led by an ice-cold, striking single cold plunge bath and a barrel sauna scented with wood
Hayataro Onsen, Roten Kobushi no Yu, is a day-use natural hot spring facility located inside Komagane Kogen Family Travel Village in Komagane City, Nagano Prefecture. In the vast open-air bath area surrounded by nature, there is a spacious wood-deck space, and the facility is fully equipped with two kinds of saunas: the latest barrel sauna and a dry sauna. The highlight is a single-style, ultra-cold open-air cold plunge bath using cool groundwater from the foot of the Central Alps, which is enough to astonish any sauna enthusiast. You can enjoy the refreshing mountain breeze from the Alps on an infinity chair and experience true totonou.
Hayataro Onsen is famous as a beautiful-skin bath and offers an alkaline simple hot spring (heated and circulated, no added water). Its slightly slippery water is excellent for smoothing the skin and is highly effective for recovery from fatigue after sports, outdoor activities, or mountain climbing. The spacious outdoor wood-deck area is lined with many infinity chairs, allowing you to fully enjoy a luxurious outdoor air bath while receiving the mountain breeze flowing down from the Alps.
A state-of-the-art barrel-shaped sauna kotteji made of wood, installed in the outdoor wood-deck area and filled with warmth. Its cylindrical shape allows the stove’s heat to travel efficiently along the ceiling and circulate throughout the room, enveloping the entire body in powerful, authentic heat. A luxurious sauna experience while gazing out at the beautiful nature of Komagane Kogen through the windows.
An ultra-cold cold plunge bath in a single-temperature style, located right next to the barrel sauna in the outdoor area. It draws pure, cold spring water directly from the blessings of the Central Alps, and its signature feature is its shockingly icy coldness. It instantly cools down a body heated to the limit in the sauna, leading you into a trance-like state of totonou as quickly as possible.
[Day-use bathing] 11:00-22:00 (last admission 21:00) *Closed every Thursday (open if Thursday falls on a public holiday)
Nagano
A celebrated spot with drinkable North Alps groundwater and the nation’s top electric baths
Nagano
A premium Karuizawa resort where you can totonou in a natural hot spring with water flowing directly from the source and the forest’s spring water
Nagano
A highland hot spring resort standing by Lake Shirakaba
JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
64 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.
