Day Use
YesClosed every Wednesday and Thursday most of the year, but from June through September only Thursday is a closed day. Hours run longer and the closed days shift around New Year, Golden Week, and other holidays.
Adult admission is 1,200 yen for an unlimited stay, 850 yen for elementary-school kids, and 650 yen for preschoolers aged 3 to 5. Residents of Fujimi and six neighboring towns get a discounted 800 yen adult rate with ID or a point card, and there's also a 400 yen entry-only option without bathing.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
The sauna (kama-buro, Finnish-style) is only on the west side of the alternating men's/women's layout.
Cold water plunge bath, typically used after sauna
The cold bath is a spring-fed utaseyu (about 20-25C) used to cool off after the sauna.
Capabilities
Shared bathing area for all genders
Baths are gender-separated with a daily side swap, not mixed bathing; note a small child may accompany an opposite-sex parent up to a posted age limit (per a 2024 site notice), which is a separate policy from true mixed bathing.
Policies & Services
Welcomes children and families
Kids welcome (diaper tables, kids menu, lukewarm baths for children), but supervision is required and there is a posted age limit for a child bathing with an opposite-sex parent.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Views
MountainsHighlights
Cave Bath
Utaseyu
Lukewarm BathAbout
This day-use bathing complex at the foot of Mount Nyukasa (入笠山) has eight styles of outdoor bath, two indoor baths, and a sauna, all filled with a naturally alkaline sulfur spring that keeps flowing fresh from the source. The water is smooth and slightly silky on the skin, with a faint sulfur scent. A mist-filled cave bath holds its water close to body temperature for a long, relaxed soak, and next to the sauna is a cold utaseyu (打たせ湯), spring water falling from a trough, used to cool off after a sweat. Men's and women's baths swap sides each day, and the building also has a restaurant, a free rest hall, and RV parking, in the Fujimi highlands of Nagano.
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Last updated August 5, 2026