One of the largest bathhouses in the Kanto region, where you can enjoy powerful steam and a famous hot spring
Saitama Kasukabe City
"Kasukabe Yumoto Onsen" is one of the largest day-use hot spring facilities in the Kanto region, boasting a vast site in Kasukabe City, Saitama Prefecture. A major renovation in 2023 significantly upgraded the sauna and bathing facilities. The alkaline simple spring that gushes up from underground has a soft, gentle feel and lets you fully enjoy the appeal of the natural spring water. The sauna features a massive stadium sauna that can accommodate more than 30 people. Daily aufguss events let you experience powerful steam and wind from skilled heat bath masters. With a crisp, refreshing cold plunge bath, outdoor bathing in the open-air area, and even a large swimwear-friendly pool called Thermes, it is a leisure hot spring spot where you can spend the whole day having fun.
TypeNatural Hot Spring
A mildly alkaline simple hot spring. Because it contains no salt, it is gentle on the skin and has a smooth, silky feel. It is said to soften dead skin cells and leave the skin smooth. You can savor this famous hot spring to your heart's content in the spacious large bath and open-air bath.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity30people
A stadium sauna that underwent renovation and now features the latest sauna heaters, boasting one of the largest spaces in the region. At the daily regular aufguss events, you can experience dynamic bursts of steam and intense sweating. A clean, airy space filled with the scent of wood.
Water QualityTap Water
Capacity5people
A cold plunge bath located right next to the sauna, offering a crisp, refreshing chill. Continuous running water keeps it consistently fresh. It instantly tightens your overheated body after sauna use and guides you into a deep state of perfect relaxation.
Closed Days: None
344-0036 66-1 Shimooomasushinden, Kasukabe City, Saitama Prefecture
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
One of the largest bathhouses in the Kanto region, where you can enjoy powerful steam and a famous hot spring
Saitama Kasukabe City
"Kasukabe Yumoto Onsen" is one of the largest day-use hot spring facilities in the Kanto region, boasting a vast site in Kasukabe City, Saitama Prefecture. A major renovation in 2023 significantly upgraded the sauna and bathing facilities. The alkaline simple spring that gushes up from underground has a soft, gentle feel and lets you fully enjoy the appeal of the natural spring water. The sauna features a massive stadium sauna that can accommodate more than 30 people. Daily aufguss events let you experience powerful steam and wind from skilled heat bath masters. With a crisp, refreshing cold plunge bath, outdoor bathing in the open-air area, and even a large swimwear-friendly pool called Thermes, it is a leisure hot spring spot where you can spend the whole day having fun.
TypeNatural Hot Spring
A mildly alkaline simple hot spring. Because it contains no salt, it is gentle on the skin and has a smooth, silky feel. It is said to soften dead skin cells and leave the skin smooth. You can savor this famous hot spring to your heart's content in the spacious large bath and open-air bath.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity30people
A stadium sauna that underwent renovation and now features the latest sauna heaters, boasting one of the largest spaces in the region. At the daily regular aufguss events, you can experience dynamic bursts of steam and intense sweating. A clean, airy space filled with the scent of wood.
Water QualityTap Water
Capacity5people
A cold plunge bath located right next to the sauna, offering a crisp, refreshing chill. Continuous running water keeps it consistently fresh. It instantly tightens your overheated body after sauna use and guides you into a deep state of perfect relaxation.
Closed Days: None
344-0036 66-1 Shimooomasushinden, Kasukabe City, Saitama Prefecture
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