An open-air bathing area where you can feel the sea breeze of Aoshima, and a smooth beautifying bath
Miyazaki Miyazaki City
A natural hot spring large bath attached to Route Inn Grantia Aoshima Taiyokaku, located on a hill in Aoshima, Miyazaki City. The chloride and sodium bicarbonate spring, famed as a beautifying bath, is clear yet remarkably smooth and slippery, giving the skin an exceptional feel. After working up a sweat in the compact sauna, head to the cold plunge bath, which is thoroughly chilled by a chiller. The open-air bathing area, where you can enjoy the pleasant breeze unique to this hill near the sea, offers a superb sense of openness. There is also a cave bath in the men's bath and a pot bath in the women's bath, along with a variety of other tubs to enjoy.
TypeNatural Hot Spring
Sodium chloride and sodium bicarbonate spring. The water is colorless and clear, yet its smooth, silky texture is impressive and unmistakable the moment you step in, making it a wonderful beautifying bath. The men's bath features a cave bath that offers a mysterious sensation, while the women's bath has a pot bath. In the open-air bath, you can soak while feeling the Aoshima sea breeze.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A compact far-infrared sauna located right after entering the bath area from the changing room. The room is set at 90°C. It has two levels, but the benches are a bit narrow, and the capacity is about 4 to 6 people seated comfortably. It is neither too dry nor too humid, making it an ideal setting for a long, thorough sweat.
Water QualityTap Water
Capacity3people
A cold plunge bath located right in front of the sauna, with excellent flow for moving between the two. It is thoroughly chilled by a chiller, providing just the right temperature against the heat of the sauna and allowing you to gradually cool down your body.
Closed Days: None
〒889-2163 1-16-2 Aoshima Nishi, Miyazaki City, Miyazaki 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
An open-air bathing area where you can feel the sea breeze of Aoshima, and a smooth beautifying bath
Miyazaki Miyazaki City
A natural hot spring large bath attached to Route Inn Grantia Aoshima Taiyokaku, located on a hill in Aoshima, Miyazaki City. The chloride and sodium bicarbonate spring, famed as a beautifying bath, is clear yet remarkably smooth and slippery, giving the skin an exceptional feel. After working up a sweat in the compact sauna, head to the cold plunge bath, which is thoroughly chilled by a chiller. The open-air bathing area, where you can enjoy the pleasant breeze unique to this hill near the sea, offers a superb sense of openness. There is also a cave bath in the men's bath and a pot bath in the women's bath, along with a variety of other tubs to enjoy.
TypeNatural Hot Spring
Sodium chloride and sodium bicarbonate spring. The water is colorless and clear, yet its smooth, silky texture is impressive and unmistakable the moment you step in, making it a wonderful beautifying bath. The men's bath features a cave bath that offers a mysterious sensation, while the women's bath has a pot bath. In the open-air bath, you can soak while feeling the Aoshima sea breeze.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A compact far-infrared sauna located right after entering the bath area from the changing room. The room is set at 90°C. It has two levels, but the benches are a bit narrow, and the capacity is about 4 to 6 people seated comfortably. It is neither too dry nor too humid, making it an ideal setting for a long, thorough sweat.
Water QualityTap Water
Capacity3people
A cold plunge bath located right in front of the sauna, with excellent flow for moving between the two. It is thoroughly chilled by a chiller, providing just the right temperature against the heat of the sauna and allowing you to gradually cool down your body.
Closed Days: None
〒889-2163 1-16-2 Aoshima Nishi, Miyazaki City, Miyazaki 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