Koten no Yu - Shirakaba Resort

"Koten no Yu" is a hot spring and sauna facility located at the Shirakaba Resort Ikenotaira Hotel in Tateshina Town, Kitasaku District, Nagano Prefecture. Situated at an altitude of 1,400 meters on the shores of Lake Shirakaba, you can enjoy panoramic views of Mount Kuruma and Lake Shirakaba from the infinity-designed open-air bath. The mixed bathing area "Kohan Konyoku Sora" features the scenic sauna "Ku," which seems to float on the lake, and a cold plunge bath with natural Tateshina mountain spring water. In the gender-separated indoor saunas, you can enjoy automatic aroma löyly every 30 minutes. The Tarugasawa Onsen, a calcium-sodium sulfate spring, gently warms the body, and you can enjoy free drinks made from natural spring water in the post-bath lounge. Whether staying overnight or visiting for the day, you can enjoy a full day of resort relaxation.

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1596 Ashidahachino, Tateshina Town, Kitasaku District, Nagano Prefecture
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Facility Name
Koten no Yu - Shirakaba Resort
Facility Type
Onsen & Spa・Hotel & Ryokan
Address
1596 Ashidahachino, Tateshina Town, Kitasaku District, Nagano Prefecture
Website
https://www.shirakabaresort.jp/ikenotaira-hotel/hot-spring/
Closed Days
None
Business Hours
Friday 06:00〜10:00, 11:30〜01:00
Monday 06:00〜10:00, 11:30〜01:00
Sunday 06:00〜10:00, 11:30〜01:00
Holiday 06:00〜10:00, 11:30〜01:00
Tuesday 06:00〜10:00, 11:30〜01:00
Saturday 06:00〜10:00, 11:30〜01:00
Thursday 06:00〜10:00, 11:30〜01:00
Wednesday 06:00〜10:00, 11:30〜01:00
日帰り入浴 11:30~23:00
Tattoo Policy
🚫 No Tattoos

♨️Hot Spring Information

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Tarugasawa Onsen
Natural Hot Spring
Tarugasawa Onsen is a sulfate spring with calcium and sodium as its main components. The water feels soft and gently warms the body from the core, providing a highly insulating hot spring. It is expected to be effective for chronic pain in muscles and joints, cold sensitivity, and fatigue recovery, gently enveloping the body heated by the sauna and cold plunge bath. In the infinity-designed open-air bath, you can enjoy the hot spring with a sense of openness as if integrated with Lake Shirakaba. After bathing, your skin becomes moist and smooth, allowing you to refresh both body and mind with the fresh highland air.

Sauna & Cold Bath Information

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Dry Sauna
Male
90°C
The automatic löyly operates every 30 minutes, filling the room with the aroma and moisturizing steam. The room has a space for lying down, allowing you to relax and warm your body to the core. You can enjoy sweating experiences with different atmospheres in the wooden bath enveloped in the scent of cypress and the stone bath where you can enjoy a lying bath on stone beds.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
6people
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Scenic Sauna - Ku -
Mixed/Shared
90°C
A scenic sauna overlooking Lake Shirakaba and Mount Kuruma. With a curvilinear design inspired by mountain waves, the large windows jut out towards the lake, allowing you to enjoy a spectacular view as if floating on the lake. Three stoves gently warm the room, and you can sweat leisurely while enjoying the clear air and magnificent scenery at an altitude of 1,400 meters. As it is a mixed bathing area where swimsuits are required, families and couples can enjoy the sauna experience together.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
10people
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Cold Bath1
Male
15°C
A cold plunge bath using natural Tateshina mountain spring water in a continuous flow. The natural blessing flows directly from the high-altitude mountains, and the water quality is very mild and soft. The water temperature varies slightly with the seasons, but it is adequately cold to thoroughly cool down your body after the sauna. The refreshing sensation unique to natural water gently cools down your body steamed by the automatic löyly.
Water Quality
Groundwater
✓ Flow-through
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Cascading Cold Plunge Bath
Mixed/Shared
13°C
A cascading cold plunge bath located right outside the scenic sauna "Ku." It uses natural Tateshina mountain spring water in a continuous flow, and while the water temperature varies with the seasons, it offers a crisp and refreshing sensation. You can enjoy the luxurious experience of cooling your body under the cascading water while overlooking the spectacular views of Lake Shirakaba and Mount Kuruma. The mildness unique to natural water combined with the clear air at an altitude of 1,400 meters provides a refreshing cool down.
Water Quality
Groundwater
✓ Flow-through