Ryusenji no Yu Soka Yatsuka Branch
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Ryusenji no Yu Soka Yatsuka Branch

"Ryusenji no Yu Soka Yatsuka Branch" is a day-use hot spring facility located in Soka City, Saitama Prefecture. With the renovation on July 23, 2024, the sauna and cold plunge baths have been significantly upgraded. The Bazooka Löyly Sauna features automatic löyly every hour at 00 and 30 minutes, enveloping the entire body in a wave of heat. The men's-only Medi Sauna, located in the open-air area, offers a meditative space where you can enjoy self-löyly. Experience gradual cooling with Saitama's first single-digit cold plunge bath (below 10°C) and a 90cm deep forest cold plunge bath. The facility also includes 15 types of baths, natural hot springs, and a rock bath area called "forest villa," providing an ultimate state of relaxation from 6 AM to 2 AM.

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Address
476 Yatsukakamicho, Soka City, Saitama Prefecture
View on Google Maps
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Business Hours
Friday 06:00〜02:00
Monday 06:00〜02:00
Sunday 06:00〜02:00
Holiday 06:00〜02:00
Tuesday 06:00〜02:00
Saturday 06:00〜02:00
Thursday 06:00〜02:00
Wednesday 06:00〜02:00
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Closed Days
None
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Facility Type
Onsen & Spa
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Tattoo Policy
🚫No Tattoos
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Hot Spring Information

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Ryusenji Hot Spring

Natural Hot Spring

A natural hot spring that gushes from underground, with a sodium-chloride spring quality. The high salinity forms a film on the skin, providing excellent heat retention. After achieving a state of relaxation in the sauna and cold plunge bath, soaking in this spring gently warms tired muscles and joints, proving effective for cold sensitivity and fatigue recovery. Enjoy the natural hot spring in various tubs, such as "Firefly Carbonated Spring" and "Naked King’s Bath." After bathing, the skin feels smooth, and the warmth lasts, making it ideal for those suffering from muscle pain, joint pain, or cold sensitivity, offering the ultimate healing when combined with the sauna.

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Sauna & Cold Bath Information

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Medi Sauna

85°C

A sauna newly established in the open-air area for the purpose of meditation. Self-löyly is possible, allowing you to add steam at your own pace and immerse yourself in introspection in a quiet environment. In contrast to the lively atmosphere of the Bazooka Löyly Sauna, it offers a calm ambiance, ideal for slowly drawing out sweat. The open-air area provides a sense of freedom, offering a fresh experience of feeling the outside air while in the sauna. This special men's-only space added during the renovation allows for thorough self-reflection.

Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
15people
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Bazooka Löyly Sauna

85°C

A high-temperature dry sauna where the "Bazooka Löyly" sends a blast of hot air from above every hour at 00 and 30 minutes. Despite being an automatic löyly, the intensity of the heat wave is overwhelming, causing the entire body to sweat instantly. With ample seating and steps, it's easy to adjust the heat. This system, newly introduced in the July 2024 renovation, allows for concentrated sweating with regular heat waves. For sauna enthusiasts, the moments when the clock approaches 00 and 30 minutes become eagerly anticipated.

Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
30people
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Forest Cold Plunge Bath

13°C

A deep cold plunge bath with a depth of 90cm, allowing the entire body to be submerged for cooling. By immersing up to the neck, it cools the entire body evenly except for the head. The temperature of 13°C, while milder than the ultra cold plunge bath, combined with the water pressure from the depth, creates a unique state of relaxation. Located in the open-air area, it offers a luxurious space where you can slowly cool down while taking deep breaths in a forest-inspired atmosphere.

Water Quality
Tap Water
Capacity
3people
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Ultra Cold Plunge Bath

9°C

Saitama's first single-digit cold plunge bath (below 10°C) that instantly tightens the entire body with its intense coldness. The frigid temperature of 9°C quickly cools down a body heated to its limit in the high-temperature sauna, maximizing the contrast of blood vessel constriction and expansion.

Water Quality
Tap Water
Capacity
3people
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Cold Plunge Bath

14°C

A standard cold plunge bath that moderately cools the body heated in the Bazooka Löyly Sauna or Medi Sauna. With a temperature around 14°C, it's easy to stay submerged for a longer period, allowing for a thorough cooldown.

Water Quality
Tap Water
Capacity
6people