A "beauty bath" from 1,385 m underground, and a twin-stove sauna scented with vihta
Saitama Kumagaya City
"Kumagaya Onsen Yurano Sato" is a day-use hot spring facility within walking distance of Ishiwara Station on the Chichibu Railway in Kumagaya City, Saitama Prefecture. Its simple hot spring, drawn from 1,385 m underground, is weakly alkaline and known as a "beauty bath" that softens the skin's keratin. The sauna uses twin far-infrared stoves, and water-filled buckets placed beside the stoves help maintain humidity. The room also features a vihta, letting you enjoy deep sweating while wrapped in a pleasant aroma. The cold plunge bath is equipped with a waterfall shower, and the open-air relaxation area offers outdoor air-bathing space where you can unwind while watching the Shinkansen go by.
TypeNatural Hot Spring
A simple hot spring drawn from 1,385 m underground with a smooth feel on the skin. Its weakly alkaline properties can be expected to have an effect similar to a "beauty bath," leaving the skin silky and smooth. With a variety of baths such as a spacious open-air stone bath, pot baths, and reclining baths, you can fully enjoy the abundant hot spring water to your heart's content.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity30people
A powerful five-tier tower sauna equipped with two far-infrared heaters. Buckets of water placed beside the stoves help maintain a comfortable level of humidity, while the scent of vihta creates a relaxing atmosphere. In the spacious room, you can watch TV while warming up thoroughly from the inside out and enjoy a refreshing sweat.
Sauna TypeSteam Sauna
Stove Typeconvection
Capacity4people
A low-temperature steam sauna with the soothing scent of mugwort. It features chairs with waterfall-style bathing, allowing you to bathe in a unique style that lets you feel hot water on your back while soaking your feet in a foot bath. With little strain on the body, steam helps open the pores and provides a relaxing time that loosens both body and mind.
Water QualityTap Water
Capacity6people
A cold plunge bath located right next to the sauna room and equipped with a waterfall shower. The water is cold, instantly tightening your heated body after sauna use. It is deep enough to submerge you up to the shoulders for a proper cooldown. Fresh, cool water is maintained at all times, strongly supporting a refreshing totonou routine.
Closed Days: None
360-0825 Tsukimicho 2-1-65, Kumagaya City, Saitama Prefecture, Yurano Sato
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
A "beauty bath" from 1,385 m underground, and a twin-stove sauna scented with vihta
Saitama Kumagaya City
"Kumagaya Onsen Yurano Sato" is a day-use hot spring facility within walking distance of Ishiwara Station on the Chichibu Railway in Kumagaya City, Saitama Prefecture. Its simple hot spring, drawn from 1,385 m underground, is weakly alkaline and known as a "beauty bath" that softens the skin's keratin. The sauna uses twin far-infrared stoves, and water-filled buckets placed beside the stoves help maintain humidity. The room also features a vihta, letting you enjoy deep sweating while wrapped in a pleasant aroma. The cold plunge bath is equipped with a waterfall shower, and the open-air relaxation area offers outdoor air-bathing space where you can unwind while watching the Shinkansen go by.
TypeNatural Hot Spring
A simple hot spring drawn from 1,385 m underground with a smooth feel on the skin. Its weakly alkaline properties can be expected to have an effect similar to a "beauty bath," leaving the skin silky and smooth. With a variety of baths such as a spacious open-air stone bath, pot baths, and reclining baths, you can fully enjoy the abundant hot spring water to your heart's content.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity30people
A powerful five-tier tower sauna equipped with two far-infrared heaters. Buckets of water placed beside the stoves help maintain a comfortable level of humidity, while the scent of vihta creates a relaxing atmosphere. In the spacious room, you can watch TV while warming up thoroughly from the inside out and enjoy a refreshing sweat.
Sauna TypeSteam Sauna
Stove Typeconvection
Capacity4people
A low-temperature steam sauna with the soothing scent of mugwort. It features chairs with waterfall-style bathing, allowing you to bathe in a unique style that lets you feel hot water on your back while soaking your feet in a foot bath. With little strain on the body, steam helps open the pores and provides a relaxing time that loosens both body and mind.
Water QualityTap Water
Capacity6people
A cold plunge bath located right next to the sauna room and equipped with a waterfall shower. The water is cold, instantly tightening your heated body after sauna use. It is deep enough to submerge you up to the shoulders for a proper cooldown. Fresh, cool water is maintained at all times, strongly supporting a refreshing totonou routine.
Closed Days: None
360-0825 Tsukimicho 2-1-65, Kumagaya City, Saitama Prefecture, Yurano Sato
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