Yunoya Natural Hot Spring Yukichiro

YunoyaNaturalHotSpringYukichiro

The shock of Japan’s first cold plunge bath inside the sauna room. A new frontier where extreme heat and cold intersect.

Aichi Kiyosu City

"Yunoya Natural Hot Spring Yukichiro" is a large natural hot spring facility in Kiyosu, Aichi Prefecture. The 2023 renovation introduced the "Zero-Second Sauna Room," an astonishing setup with a cold plunge bath installed inside the sauna room, offering a one-of-a-kind experience that lets you move from intense heat to instant cooling in a single step. It also features a high-temperature sauna exceeding 100°C and baths using excellent natural hot spring water. In the expansive outdoor air bath area, many chairs are arranged, promising blissful rest away from the noise of the city.

Hot Spring & Bath Information

Yunoya Natural Hot Spring

TypeNatural Hot Spring

A sodium-calcium chloride hot spring that springs from deep underground. Rich in salt, it is beloved as a "hot water" bath with excellent moisturizing and warming effects. In addition to a spacious open-air bath, you can enjoy natural hot spring water in a wide variety of baths such as carbonated spring baths and pot baths, and the pleasant warmth lingers long after bathing.

Sauna

Ultra-High-Temperature Stadium Sauna

100°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Capacity30people

Men'sWomen's

A stadium sauna boasting overwhelming heat that easily exceeds 100°C. Auto löyly activates every 15 minutes, maintaining powerful heat waves and high humidity at all times. Sweating on the top tier is an intensely powerful experience, with heat penetrating deep into the body in a short time, making this a fully authentic sauna room that strong-style sauna enthusiasts will appreciate.

Yugekichi

60°C

Sauna TypeSteam Sauna

Stove TypeBuilt-in Stove

Capacity18people

Men'sWomen's

A steam sauna where radon, which dissolves easily in water, is carried by steam and absorbed into the body through breathing and the skin. The steam is 100% natural hot spring water.

Cold Bath

Adjecent Sauna Room Ice-Cold Plunge Bath

14°C

Water QualityNatural Water (Groundwater, Spring, etc.)

Capacity5people

Men'sWomen's

An extra-cold cold plunge bath installed inside the sauna room, with a temperature around 14°C. Its appeal lies in the indulgent feeling of soaking in water while breathing in the heat, as well as the ultimate convenience of eliminating the need to move elsewhere. Cooling down while watching the sauna theater offers a glimpse of the future of bathing experiences.

Gensenkosen Cold Plunge Bath "Mizukichi"

14°C

Water QualityHot Spring Water

Capacity3people

Men'sWomen's

A gently textured cold plunge bath lavishly using the facility's proud natural mineral hot spring water. The water quality, refined through charcoal filtration, is exceptionally clear, and its defining feature is a refreshing sensation that seems to gently envelop the entire body. It has softness even in its coldness, allowing you to feel the blessings of high-quality natural water on your skin.

Business Hours

Monday
09:00〜01:00
Tuesday
09:00〜01:00
Wednesday
09:00〜01:00
Thursday
09:00〜01:00
Friday
09:00〜02:00
Saturday
06:00〜02:00
Sunday
06:00〜01:00
Holiday
06:00〜01:00

Closed Days: None

Address

1110-1 Shimonogawara Shimonokiri, Kiyosu, Aichi Prefecture

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

Gender Access

Gender Separated

🚫
Tattoo Policy
No Tattoos
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