NaturalHotSpringMizunumanoYuattheStation

Gunma Kiryu City

Natural Hot Spring Mizunuma no Yu at the Station is a day-use hot spring facility located in Kiryu City, Gunma Prefecture. Uniquely situated directly connected to Mizunuma Station on the Watarase Keikoku Railway, it offers a rare opportunity to enjoy the beauty of the gorge on a day trip from the city center. Experience totonou with the aroma of cypress in the sauna and a cold plunge bath filled with 100% natural underground water. The natural hot spring, rich in sodium, calcium-chloride, and bicarbonate, deeply soothes fatigue. In the large open-air bath 'Komorebian,' overlooking the ridgeline of Mount Kojinyama, you can experience the tranquility of becoming one with nature through the changing seasons. After bathing, relax on the tatami mats or wooden deck and savor local flavors at the snack corner. Every Wednesday is 'Mizunuma Day,' with half-price admission, allowing you to enjoy a train trip and hot springs with ease.

Hot Spring & Bath Information

Bath

TypeNatural Hot Spring

A natural hot spring bubbling up in the valleys of Gunma. Featuring the heat-retaining properties of chloride springs and the skin-beautifying effects of bicarbonate springs, it boasts a luxurious spring quality. The water feels soft, smoothing the skin. Enjoy different expressions of the water in the indoor and open-air baths, especially in the large open-air bath 'Komorebian' overlooking the ridgeline of Mount Kojinyama, where you can spend blissful moments soaking in the water with the seasonal scenery. After bathing, you will not easily feel chilled, and the warmth from the core of your body will last. It is expected to be effective for neuralgia, frozen shoulder, sensitivity to cold, and recovery from fatigue, deeply healing both body and mind through the synergistic effects of the sauna and hot springs.

Sauna

Sauna

85°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Capacity8people

Men's

A dry sauna with the aroma of cypress. Enveloped in the warmth of wood, it draws out sweat thoroughly. The room is moderately hot, providing a comfortable temperature range for both sauna beginners and experts. The cypress fragrance enhances relaxation, deeply soothing both body and mind. After sweating, you can move smoothly to the nearby cold plunge bath of 100% natural underground water, completing the totonou cycle. Enjoy the sauna bath in a quiet space while feeling the nature of the gorge.

Cold Bath

Cold Plunge Bath with 100% Natural Underground Water

16°C

Water QualityNatural Water (Groundwater, Spring, etc.)

Capacity5people

Flow-through
Men's

A cold plunge bath using 100% natural underground water. The pure water drawn from underground is characterized by its soft texture and pleasant coolness. With a moderate chill, you can soak leisurely, gently cooling down the body heated in the sauna. After the cold plunge bath, enjoy an outdoor air bath in the large open-air bath 'Komorebian' or the relaxation space, leading to a deep state of relaxation.

Business Hours

Monday
10:00〜20:00
Tuesday
10:00〜20:00
Wednesday
10:00〜20:00
Thursday
10:00〜20:00
Friday
10:00〜20:00
Saturday
10:00〜20:00
Sunday
10:00〜20:00
Holiday
10:00〜20:00

Closed Days: None

Address

120-1 Mizunuma, Kurohonecho, Kiryu City, Gunma Prefecture

Onsen & Spa Facilities (Super Sento, Sauna, Spa)

Gender Access

Gender Separated

🏷️
Tattoo Policy
OK if fully covered with designated stickers
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