Jizo Onsen Jippuku no Yu

Jizo Onsen Jippuku no Yu is a day-use hot spring facility located at the summit of Jizo Pass in Sanadamachi, Ueda City, Nagano Prefecture, at an elevation of 975 meters. The forest sauna, made from natural cypress, is an outdoor standalone type, allowing you to sweat quietly while being enveloped by the forest air. The open-air cold plunge bath features a continuous flow of alkaline natural water sourced from 150 meters underground, offering a refreshing chill. The largest open-air bath in Nagano Prefecture features a simple alkaline spring with a pH of 9.4 that leaves your skin smooth, while the Japanese garden-style scenery and the natural beauty of the four seasons liberate the mind. Inside the Finnish-made log house, you'll find a forest restaurant, café, massage services, and a lounge with a fireplace, allowing you to spend a relaxing day at this hot spring resort under the clear air and starry sky at an elevation of 975 meters.

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9097-70 Sobe, Sanadamachi, Ueda City, Nagano Prefecture
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Facility Name
Jizo Onsen Jippuku no Yu
Facility Type
Onsen & Spa
Address
9097-70 Sobe, Sanadamachi, Ueda City, Nagano Prefecture
Website
https://zippuku.net/
Closed Days
None
Business Hours
Friday 10:00〜21:00
Monday 10:00〜21:00
Sunday 10:00〜21:00
Holiday 10:00〜21:00
Tuesday 10:00〜21:00
Saturday 10:00〜21:00
Thursday 10:00〜21:00
Wednesday 10:00〜21:00
Tattoo Policy
🚫 No Tattoos

♨️Hot Spring Information

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Jizo Onsen (Jizo Pass Source)
Natural Hot Spring
Flow-through
The strong alkaline simple spring with a pH of 9.4 gushes from underground at Jizo Pass. It boasts an abundant flow of 355 liters per minute, totaling 500 tons per day, generously filling the largest open-air bath in Nagano Prefecture. The texture of the water is thick and soft, enveloping the skin, and is known for its beautifying effects, leaving the skin smooth after bathing. In the Japanese garden-style open-air bath, you can enjoy the seasonal scenery, such as the spring Rikyubai and autumn Yamamomiji, while spending a blissful time soaking in the water. Although the source temperature is a relatively low 38.1°C, it is heated and is expected to be effective for neuralgia, muscle pain, joint pain, sensitivity to cold, and chronic digestive disorders.

Sauna & Cold Bath Information

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Forest Sauna Made from Natural Cypress
Male
90°C
The interior, filled with the scent of natural cypress, is a comfortable space wrapped in the warmth of wood. The clear air of the larch forest and the chirping of wild birds deepen the silence, providing complete liberation from the hustle and bustle of the city. The soft heat generated by the convection stove gently warms the entire body, promoting deep sweating along with the fragrance of cypress. This is the ultimate natural sauna experience, where you can become one with the forest and reflect on yourself.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
12people
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Open-Air Cold Plunge Bath with Natural Water
Male
13°C
The open-air cold plunge bath lavishly uses mineral-rich alkaline natural water that springs from 150 meters underground. The refreshing chill quickly cools the body heated in the forest sauna, and the smooth texture unique to natural water is pleasant. Being outdoors, you can enjoy the luxury of soaking in the water while forest bathing in the larch forest. The quality of the water stands out, offering a superb cold plunge bath experience achievable only at an elevation of 975 meters.
Water Quality
Groundwater
✓ Flow-through