The shock of an ultra-hot 45°C bath, free-flowing natural hot spring water, and a sharply refreshing cold plunge bath
Gunma Takasaki City
"Gunma Onsen Yasuragi no Yu" is a day-use hot spring facility in Takasaki, Gunma Prefecture, boasting abundant water from its own natural source. Its biggest highlight is the extremely hot 45°C bath, the hottest in the facility. This ultra-high-temperature onsen, combined with the sharply cold cold plunge bath, creates alternating hot and cold bathing that has captivated many regulars. The sauna is a comfortable dry sauna with a steady heat of around 90°C, allowing you to work up a thorough sweat. The sodium chloride and bicarbonate spring flowing from underground is also known as a beauty bath that leaves the skin feeling smooth, and at the drinking fountain you can taste the fresh spring water directly. Together with the open-air bath, where you can enjoy seasonal scenery, this is a facility where you can experience the overwhelming power of hot spring bathing.
TypeNatural Hot Spring
A sodium chloride and bicarbonate spring that gushes up from underground. Taking advantage of the abundant supply, it is generously offered at a level equivalent to using 1 ton of hot spring water per guest. The baths range from an ultra-hot 45°C bath to a comfortably warm bath suitable even for children. With excellent heat retention, this fresh natural hot spring leaves your skin feeling smooth long after you get out.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A standard dry sauna that fills the room with steady heat. Thanks to the far-infrared effect, it slowly warms you from the core and promotes efficient sweating. The spacious seating area lets you relax while watching TV. The combination of the cold plunge bath after sauna use and the facility's signature hot bath leads you to an even deeper level of comfort.
Water QualityTap Water
Capacity4people
A sharply cold cold plunge bath that quickly cools down a body heated by the sauna or the facility's signature 45°C hot bath. The water is clean and the feel on the skin is crisp yet pleasant. It is spacious enough to fully submerge your body for a proper cooldown. This cooling step leads to deeper relaxation during the subsequent outdoor air bath.
Closed Days: None
1767 Kaneko-machi, Takasaki-shi, Gunma 370-3511
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
The shock of an ultra-hot 45°C bath, free-flowing natural hot spring water, and a sharply refreshing cold plunge bath
Gunma Takasaki City
"Gunma Onsen Yasuragi no Yu" is a day-use hot spring facility in Takasaki, Gunma Prefecture, boasting abundant water from its own natural source. Its biggest highlight is the extremely hot 45°C bath, the hottest in the facility. This ultra-high-temperature onsen, combined with the sharply cold cold plunge bath, creates alternating hot and cold bathing that has captivated many regulars. The sauna is a comfortable dry sauna with a steady heat of around 90°C, allowing you to work up a thorough sweat. The sodium chloride and bicarbonate spring flowing from underground is also known as a beauty bath that leaves the skin feeling smooth, and at the drinking fountain you can taste the fresh spring water directly. Together with the open-air bath, where you can enjoy seasonal scenery, this is a facility where you can experience the overwhelming power of hot spring bathing.
TypeNatural Hot Spring
A sodium chloride and bicarbonate spring that gushes up from underground. Taking advantage of the abundant supply, it is generously offered at a level equivalent to using 1 ton of hot spring water per guest. The baths range from an ultra-hot 45°C bath to a comfortably warm bath suitable even for children. With excellent heat retention, this fresh natural hot spring leaves your skin feeling smooth long after you get out.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A standard dry sauna that fills the room with steady heat. Thanks to the far-infrared effect, it slowly warms you from the core and promotes efficient sweating. The spacious seating area lets you relax while watching TV. The combination of the cold plunge bath after sauna use and the facility's signature hot bath leads you to an even deeper level of comfort.
Water QualityTap Water
Capacity4people
A sharply cold cold plunge bath that quickly cools down a body heated by the sauna or the facility's signature 45°C hot bath. The water is clean and the feel on the skin is crisp yet pleasant. It is spacious enough to fully submerge your body for a proper cooldown. This cooling step leads to deeper relaxation during the subsequent outdoor air bath.
Closed Days: None
1767 Kaneko-machi, Takasaki-shi, Gunma 370-3511
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more