A hot spring bathhouse known for its shipping-container sauna and continuously flowing underground-water cold plunge bath
Hokkaido Kushiro City
"Natural Hot Spring Taikiyu Showa Branch" is a hot spring bathhouse in Kushiro, Hokkaido, with a deep commitment to sauna culture. Its biggest highlight is a full-fledged Finnish sauna built from a converted shipping container, where you can enjoy self löyly using a HARVIA stove. There is also a spacious far-infrared sauna, letting you appreciate different kinds of heat. After the sauna, a cold plunge bath with continuously flowing underground water awaits, and the refreshing tightness created by Kushiro's rich water quality is exceptional. The 100% source chloridespring has excellent moisturizing effects, and its warmth lingers even after you get out of the bath.
TypeNatural Hot Spring
A 100% source chloridespring (heated and circulated). The water, rich in salt, offers excellent moisturizing and antibacterial effects, helping keep the skin healthy. In the large bath, where art stands out against exposed concrete walls, you can spend a blissful moment warming up from the core.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A gas-powered far-infrared sauna where you can relax in a spacious room. Its gentle heat slowly penetrates deep into the body, promoting a pleasant sweat. You can unwind while watching TV, making it a space that beginners and experienced sauna-goers alike can enjoy.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A unique Finnish sauna, made from a converted shipping container and inspired by this port town. It uses a HARVIA stove, and self löyly lets you enjoy the humidity and heat just the way you like it. The wet, mellow heat envelops the whole body and brings deep relaxation.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity4people
Uses natural water pumped up from underground in a continuously flowing style. The icy-cold water temperature and the crisp quality unique to underground water refreshingly tighten the body after sauna use. Fresh water keeps flowing in constantly, delivering outstanding coolness.
Closed Days: None
1F, 5-11-8 Showa Chuo, Kushiro, Hokkaido 084-0910
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 hot spring bathhouse known for its shipping-container sauna and continuously flowing underground-water cold plunge bath
Hokkaido Kushiro City
"Natural Hot Spring Taikiyu Showa Branch" is a hot spring bathhouse in Kushiro, Hokkaido, with a deep commitment to sauna culture. Its biggest highlight is a full-fledged Finnish sauna built from a converted shipping container, where you can enjoy self löyly using a HARVIA stove. There is also a spacious far-infrared sauna, letting you appreciate different kinds of heat. After the sauna, a cold plunge bath with continuously flowing underground water awaits, and the refreshing tightness created by Kushiro's rich water quality is exceptional. The 100% source chloridespring has excellent moisturizing effects, and its warmth lingers even after you get out of the bath.
TypeNatural Hot Spring
A 100% source chloridespring (heated and circulated). The water, rich in salt, offers excellent moisturizing and antibacterial effects, helping keep the skin healthy. In the large bath, where art stands out against exposed concrete walls, you can spend a blissful moment warming up from the core.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A gas-powered far-infrared sauna where you can relax in a spacious room. Its gentle heat slowly penetrates deep into the body, promoting a pleasant sweat. You can unwind while watching TV, making it a space that beginners and experienced sauna-goers alike can enjoy.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A unique Finnish sauna, made from a converted shipping container and inspired by this port town. It uses a HARVIA stove, and self löyly lets you enjoy the humidity and heat just the way you like it. The wet, mellow heat envelops the whole body and brings deep relaxation.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity4people
Uses natural water pumped up from underground in a continuously flowing style. The icy-cold water temperature and the crisp quality unique to underground water refreshingly tighten the body after sauna use. Fresh water keeps flowing in constantly, delivering outstanding coolness.
Closed Days: None
1F, 5-11-8 Showa Chuo, Kushiro, Hokkaido 084-0910
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