Find your totonou moment with the sea of clouds and silky skin-beautifying hot spring on the plateau
Okayama Mimasaka City
An onsen lodging facility nestled on a plateau at an elevation of about 500 m in Mimasaka, Okayama Prefecture. From autumn through winter on early mornings, it is known as a scenic spot where you can look out over the sea of clouds, just as its name suggests. Its alkaline simple hot spring, pumped up from 1,500 m underground, is famous for its smooth, silky texture and skin-beautifying waters. From the open-air baths, you can gaze out over the mountains and enjoy the scenery of all four seasons. The sauna is a gas-fired far-infrared dry type with gentle heat and a pleasantly humid feel, and paired with the cold plunge bath using natural spring water, it delivers an exceptional totonou experience. The resort also offers lakeside bungalows, a restaurant, grand golf, and more.
Typeoutdoor
A large open-air stone bath. From this plateau at an elevation of 500 m, you can look out over the mountains and enjoy cherry blossoms, autumn leaves, snow scenery, and the changing seasons. On early mornings in autumn and winter, a breathtaking sea of clouds spreads out below.
Typeoutdoor
The other open-air bath, which alternates weekly between men and women. You can enjoy the silky feel of the alkaline simple hot spring flowing from 1,500 m underground along with the fresh plateau air.
Typeindoor
An indoor bath with a large plain-water tub and a reclining bath where you can stretch out your body. Its soft alkaline simple hot spring water warms you gently and leaves your skin feeling moisturized.
Typeindoor
Seasonal medicinal baths such as mugwort bath. Relax and unwind in the fragrant water.
Typeindoor
A variety of bathing options, including bubble baths, waterfall baths, and single-person pot baths. It is nice to be able to choose the bath that suits your aches and fatigue.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity8people
A dry sauna equipped with a gas-fired far-infrared stove. It has a TV, herbal bags hanging inside, and light filtering in through a round window that sets the mood. The gentle, humid heat lets you work up a deep sweat.
Water QualityHot Spring Water
Capacity2people
A cold plunge bath cooled with spring water from the hot spring source. Located right next to the sauna room for excellent flow, it uses silky spring water rich in hot spring minerals, which feels gentle and comfortable on the skin.
Closed Days: Wednesday
〒701-2614 1735 Kamiyama, Mimasaka City, Okayama 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
Find your totonou moment with the sea of clouds and silky skin-beautifying hot spring on the plateau
Okayama Mimasaka City
An onsen lodging facility nestled on a plateau at an elevation of about 500 m in Mimasaka, Okayama Prefecture. From autumn through winter on early mornings, it is known as a scenic spot where you can look out over the sea of clouds, just as its name suggests. Its alkaline simple hot spring, pumped up from 1,500 m underground, is famous for its smooth, silky texture and skin-beautifying waters. From the open-air baths, you can gaze out over the mountains and enjoy the scenery of all four seasons. The sauna is a gas-fired far-infrared dry type with gentle heat and a pleasantly humid feel, and paired with the cold plunge bath using natural spring water, it delivers an exceptional totonou experience. The resort also offers lakeside bungalows, a restaurant, grand golf, and more.
Typeoutdoor
A large open-air stone bath. From this plateau at an elevation of 500 m, you can look out over the mountains and enjoy cherry blossoms, autumn leaves, snow scenery, and the changing seasons. On early mornings in autumn and winter, a breathtaking sea of clouds spreads out below.
Typeoutdoor
The other open-air bath, which alternates weekly between men and women. You can enjoy the silky feel of the alkaline simple hot spring flowing from 1,500 m underground along with the fresh plateau air.
Typeindoor
An indoor bath with a large plain-water tub and a reclining bath where you can stretch out your body. Its soft alkaline simple hot spring water warms you gently and leaves your skin feeling moisturized.
Typeindoor
Seasonal medicinal baths such as mugwort bath. Relax and unwind in the fragrant water.
Typeindoor
A variety of bathing options, including bubble baths, waterfall baths, and single-person pot baths. It is nice to be able to choose the bath that suits your aches and fatigue.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity8people
A dry sauna equipped with a gas-fired far-infrared stove. It has a TV, herbal bags hanging inside, and light filtering in through a round window that sets the mood. The gentle, humid heat lets you work up a deep sweat.
Water QualityHot Spring Water
Capacity2people
A cold plunge bath cooled with spring water from the hot spring source. Located right next to the sauna room for excellent flow, it uses silky spring water rich in hot spring minerals, which feels gentle and comfortable on the skin.
Closed Days: Wednesday
〒701-2614 1735 Kamiyama, Mimasaka City, Okayama 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