Feel the spirit of the Jomon era through the "hot spring of warmth" with 100% free-flowing source water and a powerful sauna over 100°C
Akita Akita City
"Isedodai Onsen Jomon no Yu" is a natural hot spring facility near Odate Noshiro Airport in Kitaakita City, known for its 100% free-flowing source water. Located close to the UNESCO World Heritage Site of the Isedodai Ruins, it offers a tranquil atmosphere that evokes the spirit of the Jomon era. The sodium-chloride strong saline spring has excellent heat-retention properties and is affectionately known as the "hot spring of warmth." A sauna and cold plunge bath are also available. There is also a bedrock bath where you can enjoy 6 kinds of minerals, making it a place to spend a wide variety of relaxing moments.
TypeNatural Hot Spring
A 100% free-flowing natural hot spring from a sodium-chloride strong saline source. This luxurious water, with no added water, no heating, and no circulation, offers excellent heat retention, keeping you warm long after you leave the bath. Neutral and gentle on the skin, it washes away both physical and mental fatigue from deep within.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity6people
Powerful heat that can exceed 100°C fills the room and promotes a full, satisfying sweat. While listening to the sound of hot spring water flowing from a spout shaped like a clay figurine from the ruins, you can slowly work up a good sweat.
Water QualityTap Water
Capacity2people
The crisp coldness and soft texture are refreshing and make it ideal for cooling down after the sauna. Fresh water is constantly supplied, so you can refresh yourself in a clean, comfortable bathtub.
Closed Days: None
〒018-3454 Akita Prefecture, Kitaakita City, Wakigami Hirasaki Kawato Numa 86-2
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
Feel the spirit of the Jomon era through the "hot spring of warmth" with 100% free-flowing source water and a powerful sauna over 100°C
Akita Akita City
"Isedodai Onsen Jomon no Yu" is a natural hot spring facility near Odate Noshiro Airport in Kitaakita City, known for its 100% free-flowing source water. Located close to the UNESCO World Heritage Site of the Isedodai Ruins, it offers a tranquil atmosphere that evokes the spirit of the Jomon era. The sodium-chloride strong saline spring has excellent heat-retention properties and is affectionately known as the "hot spring of warmth." A sauna and cold plunge bath are also available. There is also a bedrock bath where you can enjoy 6 kinds of minerals, making it a place to spend a wide variety of relaxing moments.
TypeNatural Hot Spring
A 100% free-flowing natural hot spring from a sodium-chloride strong saline source. This luxurious water, with no added water, no heating, and no circulation, offers excellent heat retention, keeping you warm long after you leave the bath. Neutral and gentle on the skin, it washes away both physical and mental fatigue from deep within.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity6people
Powerful heat that can exceed 100°C fills the room and promotes a full, satisfying sweat. While listening to the sound of hot spring water flowing from a spout shaped like a clay figurine from the ruins, you can slowly work up a good sweat.
Water QualityTap Water
Capacity2people
The crisp coldness and soft texture are refreshing and make it ideal for cooling down after the sauna. Fresh water is constantly supplied, so you can refresh yourself in a clean, comfortable bathtub.
Closed Days: None
〒018-3454 Akita Prefecture, Kitaakita City, Wakigami Hirasaki Kawato Numa 86-2
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