Spectacular views of Toyama Bay and the Tateyama Mountain Range, an onsen with an ocean view
Toyama Takaoka City
"Koshinoniwa" is a bathing facility near Amaharashi Coast in Takaoka City, Toyama Prefecture. The facility uses underground natural water rich in metasilicic acid for all of its water, which is gentle on the skin and warms you from the core. The sauna offers two different bathhouses on a weekly rotation, complete with an authentic convection sauna and a rare retractable bouna sauna. Its greatest appeal is the view from the open-air area, where you can enjoy a one-of-a-kind outdoor air bath while taking in sweeping views of the Tateyama Mountain Range and Toyama Bay. You can refresh yourself and feel the nature of Hokuriku with your whole body while listening to the sound of trains running along the tracks.
TypeNatural Hot Spring
Uses natural water pumped up from underground that is rich in metasilicic acid. It is highly effective for beautiful skin, and after bathing you can feel your skin becoming moist and hydrated. Bathing while watching the sunrise rise over the Tateyama Mountain Range is exceptional, allowing you to fully savor the blessings of nature.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
It maintains a comfortable level of heat and humidity, encouraging a pleasant sweat. In the calm atmosphere of the room, you can prepare yourself for the spectacular outdoor air bath.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity3people
A cold plunge bath made luxuriously with underground natural water rich in metasilicic acid. The water is exceptionally smooth and gentle on the skin, softly enveloping your body after the sauna. Its pleasantly cool temperature lasts, guiding both body and mind into deep relaxation.
Closed Days: None
〒933-0101 2-5-25 Fushikikokubu, Takaoka City, Toyama 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
Spectacular views of Toyama Bay and the Tateyama Mountain Range, an onsen with an ocean view
Toyama Takaoka City
"Koshinoniwa" is a bathing facility near Amaharashi Coast in Takaoka City, Toyama Prefecture. The facility uses underground natural water rich in metasilicic acid for all of its water, which is gentle on the skin and warms you from the core. The sauna offers two different bathhouses on a weekly rotation, complete with an authentic convection sauna and a rare retractable bouna sauna. Its greatest appeal is the view from the open-air area, where you can enjoy a one-of-a-kind outdoor air bath while taking in sweeping views of the Tateyama Mountain Range and Toyama Bay. You can refresh yourself and feel the nature of Hokuriku with your whole body while listening to the sound of trains running along the tracks.
TypeNatural Hot Spring
Uses natural water pumped up from underground that is rich in metasilicic acid. It is highly effective for beautiful skin, and after bathing you can feel your skin becoming moist and hydrated. Bathing while watching the sunrise rise over the Tateyama Mountain Range is exceptional, allowing you to fully savor the blessings of nature.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
It maintains a comfortable level of heat and humidity, encouraging a pleasant sweat. In the calm atmosphere of the room, you can prepare yourself for the spectacular outdoor air bath.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity3people
A cold plunge bath made luxuriously with underground natural water rich in metasilicic acid. The water is exceptionally smooth and gentle on the skin, softly enveloping your body after the sauna. Its pleasantly cool temperature lasts, guiding both body and mind into deep relaxation.
Closed Days: None
〒933-0101 2-5-25 Fushikikokubu, Takaoka City, Toyama 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