A relaxing space of gentle waters and an authentic sauna, bubbling at the foot of Maruoka Castle
Fukui Sakai City
Kasuminosato Onsen is a day-use hot spring facility in Maruoka-cho, Sakai City, Fukui Prefecture. Located near Maruoka Castle, it is popular with everyone from local residents to tourists. The natural hot spring, a sodium chloride and sulfate spring, is gentle on the skin and warms you deeply from within. The sauna is a high-temperature dry sauna that delivers a solid sense of heat, allowing you to enjoy efficient sweating. It also comes with a rare freeze room, so even if you are not comfortable with a cold plunge bath, you can cool down without strain. Outdoor air baths by the open-air bath are also pleasant, letting you refresh both body and mind while feeling the seasonal breeze.
TypeNatural Hot Spring
A natural hot spring of sodium chloride and sulfate water. It is colorless, clear, and free of any strong character, making it a gentle bath that anyone can enjoy with peace of mind. It has a strong heat-retaining effect, and its warmth lingers long after you get out of the bath.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A high-temperature dry sauna where you can enjoy authentic heat. A convection stove keeps the room temperature stable, encouraging comfortable sweating. In a calm atmosphere, you can spend a refreshing time washing away the fatigue of the day with your sweat.
Water QualityTap Water
Capacity2people
A gentle cold water bath installed right next to the sauna. With its just-right temperature that is not too cold, you can cool your body down at a relaxed pace. By alternating between sauna and cold bath, it leads you into a refreshing state of relaxation.
Closed Days: Thursday
〒910-0224 Fukui Prefecture, Sakai City, Maruoka-cho, Yagogo 21-7-1
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 relaxing space of gentle waters and an authentic sauna, bubbling at the foot of Maruoka Castle
Fukui Sakai City
Kasuminosato Onsen is a day-use hot spring facility in Maruoka-cho, Sakai City, Fukui Prefecture. Located near Maruoka Castle, it is popular with everyone from local residents to tourists. The natural hot spring, a sodium chloride and sulfate spring, is gentle on the skin and warms you deeply from within. The sauna is a high-temperature dry sauna that delivers a solid sense of heat, allowing you to enjoy efficient sweating. It also comes with a rare freeze room, so even if you are not comfortable with a cold plunge bath, you can cool down without strain. Outdoor air baths by the open-air bath are also pleasant, letting you refresh both body and mind while feeling the seasonal breeze.
TypeNatural Hot Spring
A natural hot spring of sodium chloride and sulfate water. It is colorless, clear, and free of any strong character, making it a gentle bath that anyone can enjoy with peace of mind. It has a strong heat-retaining effect, and its warmth lingers long after you get out of the bath.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A high-temperature dry sauna where you can enjoy authentic heat. A convection stove keeps the room temperature stable, encouraging comfortable sweating. In a calm atmosphere, you can spend a refreshing time washing away the fatigue of the day with your sweat.
Water QualityTap Water
Capacity2people
A gentle cold water bath installed right next to the sauna. With its just-right temperature that is not too cold, you can cool your body down at a relaxed pace. By alternating between sauna and cold bath, it leads you into a refreshing state of relaxation.
Closed Days: Thursday
〒910-0224 Fukui Prefecture, Sakai City, Maruoka-cho, Yagogo 21-7-1
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