A blissful sauna in Minamiaso, featuring a natural mineral water cold plunge bath and powerful heat exceeding 100°C
Kumamoto Minamiaso Village
"Shiramizu Onsen Takenokurasanso" is a hot spring inn at the foot of Minamiaso, with every room featuring an open-air bath. The public bath is equipped with an authentic dry sauna that has earned high praise from sauna enthusiasts. Its powerful heat, which can exceed 100°C, quickly draws sweat from deep within the body. Most notably, there is a natural mineral water cold plunge bath filled with free-flowing groundwater from Minamiaso. The deep tub, over 1 m deep, and the smooth touch of the natural water create an exceptional cool-down experience. Surrounded by the grandeur of Aso's nature, you can deeply reset both body and mind with renowned hot springs and a genuine sauna.
TypeNatural Hot Spring
A natural hot spring rich in sodium carbonate, known as a beauty bath. It is characterized by a uniquely smooth and silky texture on the skin, and it helps keep the skin soft and smooth even after bathing. You can luxuriate in fresh free-flowing spring water in both the open-air baths of all guest rooms and the public bath.
Sauna TypeDry Sauna
Capacity8people
An authentic dry sauna. In a quiet room with no television, only an hourglass is placed, creating a stoic space. Powerful heat is its defining feature, and the dry, intense warmth envelops the body, encouraging deep sweating in a short time. Surrounded by the scent of wood, you can spend a luxurious moment facing yourself.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Generously fed by free-flowing groundwater from Minamiaso. The tub is more than 1 m deep, so you can immerse yourself up to the shoulders and cool your entire body at once. Its appeal lies in the smooth, refreshing feel that only natural water can provide, with no chlorine smell. Enjoy a luxurious cool-down experience with fresh water constantly flowing in.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
A slightly shallower cold plunge bath installed next to the deeper tub. It also uses natural water from Minamiaso and is known for its gentle feel on the skin. Recommended for those who do not like deep cold plunge baths or who want to enjoy the cooling sensation at a relaxed pace. By alternating between the two cold plunge baths, you can enjoy a hot-and-cold bathing experience tailored to your preferences.
Closed Days: Open all year
2065 Nakamatsu, Minamiaso-mura, Aso-gun, Kumamoto 869-1505
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 moreA blissful sauna in Minamiaso, featuring a natural mineral water cold plunge bath and powerful heat exceeding 100°C
Kumamoto Minamiaso Village
"Shiramizu Onsen Takenokurasanso" is a hot spring inn at the foot of Minamiaso, with every room featuring an open-air bath. The public bath is equipped with an authentic dry sauna that has earned high praise from sauna enthusiasts. Its powerful heat, which can exceed 100°C, quickly draws sweat from deep within the body. Most notably, there is a natural mineral water cold plunge bath filled with free-flowing groundwater from Minamiaso. The deep tub, over 1 m deep, and the smooth touch of the natural water create an exceptional cool-down experience. Surrounded by the grandeur of Aso's nature, you can deeply reset both body and mind with renowned hot springs and a genuine sauna.
TypeNatural Hot Spring
A natural hot spring rich in sodium carbonate, known as a beauty bath. It is characterized by a uniquely smooth and silky texture on the skin, and it helps keep the skin soft and smooth even after bathing. You can luxuriate in fresh free-flowing spring water in both the open-air baths of all guest rooms and the public bath.
Sauna TypeDry Sauna
Capacity8people
An authentic dry sauna. In a quiet room with no television, only an hourglass is placed, creating a stoic space. Powerful heat is its defining feature, and the dry, intense warmth envelops the body, encouraging deep sweating in a short time. Surrounded by the scent of wood, you can spend a luxurious moment facing yourself.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Generously fed by free-flowing groundwater from Minamiaso. The tub is more than 1 m deep, so you can immerse yourself up to the shoulders and cool your entire body at once. Its appeal lies in the smooth, refreshing feel that only natural water can provide, with no chlorine smell. Enjoy a luxurious cool-down experience with fresh water constantly flowing in.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
A slightly shallower cold plunge bath installed next to the deeper tub. It also uses natural water from Minamiaso and is known for its gentle feel on the skin. Recommended for those who do not like deep cold plunge baths or who want to enjoy the cooling sensation at a relaxed pace. By alternating between the two cold plunge baths, you can enjoy a hot-and-cold bathing experience tailored to your preferences.
Closed Days: Open all year
2065 Nakamatsu, Minamiaso-mura, Aso-gun, Kumamoto 869-1505
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