One of Gotemba's premier open-air natural hot spring facilities, where you can unwind amid spectacular views of Mount Fuji and the power of lava
Shizuoka Gotemba City
"Otainai Onsen Health Center" is a day-use hot spring facility located inside Fuji Otainai Seikoen in Gotemba City, Shizuoka Prefecture. It was named after Otainai, a lava tunnel formed by Mount Fuji's eruption, and from the open-air bath you can take in a majestic, close-up view of Mount Fuji. Its signature Fuji Lava Bath is a cave-style tub made lavishly with Mount Fuji lava, letting you experience powerful relaxation in a mystical atmosphere. A refreshing cold bath using groundwater, a sauna with a calm ambiance, and a gentle natural alkaline hot spring will help your body and mind relax from the inside out.
TypeNatural Hot Spring
A natural alkaline simple hot spring. It is colorless, odorless, and known as a beauty bath for its exceptionally smooth feel on the skin. From the open-air bath overlooking Mount Fuji to the tubs made with lava stone, you can enjoy Fuji's blessings in a variety of settings.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity8people
A dry sauna that warms you deeply from the core with far-infrared heaters. In a room with soft lighting and a TV, you can spend a relaxing, unhurried time. With a moderate temperature setting, both sauna beginners and seasoned users can enjoy a comfortable sweat.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
A smooth, gentle cold bath drawn from well water, one of the abundant blessings of Mount Fuji. It has the mellow texture unique to natural water and softly envelops your overheated body after sauna use. With a comfortable temperature setting, you can enjoy a thorough cooldown.
Closed Days: Tuesday
1380-25 Inno, Gotemba City, Shizuoka 412-0008
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
One of Gotemba's premier open-air natural hot spring facilities, where you can unwind amid spectacular views of Mount Fuji and the power of lava
Shizuoka Gotemba City
"Otainai Onsen Health Center" is a day-use hot spring facility located inside Fuji Otainai Seikoen in Gotemba City, Shizuoka Prefecture. It was named after Otainai, a lava tunnel formed by Mount Fuji's eruption, and from the open-air bath you can take in a majestic, close-up view of Mount Fuji. Its signature Fuji Lava Bath is a cave-style tub made lavishly with Mount Fuji lava, letting you experience powerful relaxation in a mystical atmosphere. A refreshing cold bath using groundwater, a sauna with a calm ambiance, and a gentle natural alkaline hot spring will help your body and mind relax from the inside out.
TypeNatural Hot Spring
A natural alkaline simple hot spring. It is colorless, odorless, and known as a beauty bath for its exceptionally smooth feel on the skin. From the open-air bath overlooking Mount Fuji to the tubs made with lava stone, you can enjoy Fuji's blessings in a variety of settings.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity8people
A dry sauna that warms you deeply from the core with far-infrared heaters. In a room with soft lighting and a TV, you can spend a relaxing, unhurried time. With a moderate temperature setting, both sauna beginners and seasoned users can enjoy a comfortable sweat.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
A smooth, gentle cold bath drawn from well water, one of the abundant blessings of Mount Fuji. It has the mellow texture unique to natural water and softly envelops your overheated body after sauna use. With a comfortable temperature setting, you can enjoy a thorough cooldown.
Closed Days: Tuesday
1380-25 Inno, Gotemba City, Shizuoka 412-0008
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