In Urakawa, the home of racehorses, enjoy a Black Silica bath with views of the Hidaka Mountains and a powerful cold plunge bath.
Hokkaido Urakawa Town
"Aeru no Yu" is an observation bathhouse inside Urakawa Yushun Village AERU in Urakawa, Hokkaido. Its appeal lies in the open, spacious atmosphere, with sweeping views of the majestic Hidaka Mountains. The baths use the rare natural mineral Black Silica (Shintenseki), known for its strong far-infrared effect, allowing you to warm up deeply from the core. The sauna area is also well equipped, featuring a high-temperature dry sauna and a cold plunge bath that is among the coldest in the Hidaka area. Whether as a refreshing stop after enjoying horseback riding and other activities or as a sauna-focused visit, it promises a highly satisfying experience.
TypeArtificial Hot Spring
The rare natural mineral Black Silica (Shintenseki) is used in the main bath and jet bath. Thanks to its far-infrared effect, the water feels gentle and warms you deeply from the core. The observation window offers a spectacular view of the Hidaka Mountains.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A dry sauna characterized by powerful heat. Its dry, convective stone heat warms your body from the inside out. From the windows, you can take in Urakawa's rich natural scenery and enjoy a sauna session with a sense of openness.
Water QualityTap Water
Capacity2people
A crisp, icy cold plunge bath that ranks among the coldest in the Hidaka area. It pairs perfectly with the high-temperature sauna, instantly tightening the body and leading you into deep totonou.
Closed Days: None
057-0171 141-40 Nishicha, Urakawa-cho, Urakawa-gun, Hokkaido
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
In Urakawa, the home of racehorses, enjoy a Black Silica bath with views of the Hidaka Mountains and a powerful cold plunge bath.
Hokkaido Urakawa Town
"Aeru no Yu" is an observation bathhouse inside Urakawa Yushun Village AERU in Urakawa, Hokkaido. Its appeal lies in the open, spacious atmosphere, with sweeping views of the majestic Hidaka Mountains. The baths use the rare natural mineral Black Silica (Shintenseki), known for its strong far-infrared effect, allowing you to warm up deeply from the core. The sauna area is also well equipped, featuring a high-temperature dry sauna and a cold plunge bath that is among the coldest in the Hidaka area. Whether as a refreshing stop after enjoying horseback riding and other activities or as a sauna-focused visit, it promises a highly satisfying experience.
TypeArtificial Hot Spring
The rare natural mineral Black Silica (Shintenseki) is used in the main bath and jet bath. Thanks to its far-infrared effect, the water feels gentle and warms you deeply from the core. The observation window offers a spectacular view of the Hidaka Mountains.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A dry sauna characterized by powerful heat. Its dry, convective stone heat warms your body from the inside out. From the windows, you can take in Urakawa's rich natural scenery and enjoy a sauna session with a sense of openness.
Water QualityTap Water
Capacity2people
A crisp, icy cold plunge bath that ranks among the coldest in the Hidaka area. It pairs perfectly with the high-temperature sauna, instantly tightening the body and leading you into deep totonou.
Closed Days: None
057-0171 141-40 Nishicha, Urakawa-cho, Urakawa-gun, Hokkaido
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