Relax your body and mind with two free-flowing spring sources and a sand bath
Yamagata Yonezawa City
"Oitama Onsen Tamanoyu" is a day-use hot spring facility in Yonezawa City, Yamagata Prefecture. Its biggest feature is that you can enjoy two different natural spring sources, one in the indoor bath and one in the open-air bath, both luxuriously poured at 100% free flow. In the indoor bath, you can soak in a chloride spring that warms the body from deep within, while the open-air bath lets you enjoy an alkaline simple spring that is gentle on the skin. The facility also has a rare sand bath, where you can experience detoxing with crystal sand. It is also equipped with a sauna and a cold plunge bath, making it a place where you can spend a high-quality, relaxing time in a tranquil setting overlooking rural scenery.
TypeNatural Hot Spring
A sodium chloride spring used in the indoor bath. This highly heat-retaining water warms the body thoroughly from deep within and is known for making it hard to lose heat after bathing. Fresh water at 100% free flow fills the tub, allowing you to enjoy the abundant spring ingredients throughout your whole body. It offers a powerful bathing experience that seems to gently loosen daily fatigue from the roots up.
TypeNatural Hot Spring
An alkaline simple spring used in the open-air bath. With its gentle, silky texture, it is known as a beauty bath with skin-beautifying effects. The time spent soaking in free-flowing spring water in the open, airy outdoor bath while feeling the pleasant breeze is exceptional. Together with the peaceful scenery, it offers a calm bathing experience that relaxes both body and mind.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A full-fledged dry sauna where you can really feel the heat. The indoor temperature is stable, encouraging pleasant sweating. Wrapped in soft lighting and the warmth of wood, it is a space where you can quietly warm your body. A cold plunge bath is located right near the sauna room, making smooth alternating bathing one of its attractions.
Water QualityTap Water
Capacity2people
A cold plunge bath that gently cools the body after sauna use. With a comfortable temperature setting, it can be enjoyed by everyone from sauna beginners to enthusiasts. Its crisp coolness tightens the whole body and enhances the refreshing effect. Though compact, it is kept constantly clean, supporting a爽快 cool-down experience.
Closed Days: None
〒992-0118 Yamagata Prefecture, Yonezawa City, Kami-Shinden 2300-1
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
Relax your body and mind with two free-flowing spring sources and a sand bath
Yamagata Yonezawa City
"Oitama Onsen Tamanoyu" is a day-use hot spring facility in Yonezawa City, Yamagata Prefecture. Its biggest feature is that you can enjoy two different natural spring sources, one in the indoor bath and one in the open-air bath, both luxuriously poured at 100% free flow. In the indoor bath, you can soak in a chloride spring that warms the body from deep within, while the open-air bath lets you enjoy an alkaline simple spring that is gentle on the skin. The facility also has a rare sand bath, where you can experience detoxing with crystal sand. It is also equipped with a sauna and a cold plunge bath, making it a place where you can spend a high-quality, relaxing time in a tranquil setting overlooking rural scenery.
TypeNatural Hot Spring
A sodium chloride spring used in the indoor bath. This highly heat-retaining water warms the body thoroughly from deep within and is known for making it hard to lose heat after bathing. Fresh water at 100% free flow fills the tub, allowing you to enjoy the abundant spring ingredients throughout your whole body. It offers a powerful bathing experience that seems to gently loosen daily fatigue from the roots up.
TypeNatural Hot Spring
An alkaline simple spring used in the open-air bath. With its gentle, silky texture, it is known as a beauty bath with skin-beautifying effects. The time spent soaking in free-flowing spring water in the open, airy outdoor bath while feeling the pleasant breeze is exceptional. Together with the peaceful scenery, it offers a calm bathing experience that relaxes both body and mind.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A full-fledged dry sauna where you can really feel the heat. The indoor temperature is stable, encouraging pleasant sweating. Wrapped in soft lighting and the warmth of wood, it is a space where you can quietly warm your body. A cold plunge bath is located right near the sauna room, making smooth alternating bathing one of its attractions.
Water QualityTap Water
Capacity2people
A cold plunge bath that gently cools the body after sauna use. With a comfortable temperature setting, it can be enjoyed by everyone from sauna beginners to enthusiasts. Its crisp coolness tightens the whole body and enhances the refreshing effect. Though compact, it is kept constantly clean, supporting a爽快 cool-down experience.
Closed Days: None
〒992-0118 Yamagata Prefecture, Yonezawa City, Kami-Shinden 2300-1
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