An open-air bath where you can feel the breath of the forest, and a "scorching blast" sauna that is truly impressive
Tokyo Machida City
"Tamasakai Natural Hot Spring Morinoirodori" is a lush day-use hot spring facility in Machida City, Tokyo. Its standout feature is the "hot-air auto löyly" held every 20 minutes. Water poured onto the sauna stones, followed by a powerful blast of hot air, creates a scorching experience that even sauna enthusiasts will admire. The cold plunge bath, about 90 cm deep, is crisp and refreshing, quickly cooling down your overheated body. Outdoor air baths in the open-air area surrounded by rich nature offer a sense of openness that feels far removed from central Tokyo. Along with the black hot spring water drawn directly from the source, you can enjoy an exceptional totonou time in the midst of the forest.
TypeNatural Hot Spring
A natural hot spring drawn directly from the source, known for its smooth, silky texture. In the open-air area overlooking beautiful forest scenery, you can fully enjoy the fresh hot spring water. It is also highly regarded for its skin-beautifying effects, leaving your skin soft and moisturized after bathing.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity20people
A dry sauna known for its auto löyly sessions every 20 minutes, followed by a powerful blast of hot air. The four-tiered interior circulates heat extremely well, allowing you to enjoy an intense, stimulating sweat experience from the blast. In the spacious room, you can take in the powerful heat with your whole body.
Sauna TypeSalt Sauna
Stove Typefar_infrared
Capacity10people
A steam sauna where you can care for your skin with mud packs and salt while surrounded by the scent of mugwort. The gentle heat softly warms the body, and the synergy of herbs and minerals leaves you refreshed. It is also recommended for those who do not like high-temperature saunas, as well as for women.
Water QualityTap Water
Capacity8people
A cold plunge bath about 90 cm deep. Its sharply chilled water temperature quickly cools down your overheated body after auto löyly. It also accommodates many bathers, letting you enjoy a refreshing immersion that thoroughly cools your whole body.
Closed Days: None
1-11-5 Koyamagaoka, Machida City, Tokyo 194-0215
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 bath where you can feel the breath of the forest, and a "scorching blast" sauna that is truly impressive
Tokyo Machida City
"Tamasakai Natural Hot Spring Morinoirodori" is a lush day-use hot spring facility in Machida City, Tokyo. Its standout feature is the "hot-air auto löyly" held every 20 minutes. Water poured onto the sauna stones, followed by a powerful blast of hot air, creates a scorching experience that even sauna enthusiasts will admire. The cold plunge bath, about 90 cm deep, is crisp and refreshing, quickly cooling down your overheated body. Outdoor air baths in the open-air area surrounded by rich nature offer a sense of openness that feels far removed from central Tokyo. Along with the black hot spring water drawn directly from the source, you can enjoy an exceptional totonou time in the midst of the forest.
TypeNatural Hot Spring
A natural hot spring drawn directly from the source, known for its smooth, silky texture. In the open-air area overlooking beautiful forest scenery, you can fully enjoy the fresh hot spring water. It is also highly regarded for its skin-beautifying effects, leaving your skin soft and moisturized after bathing.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity20people
A dry sauna known for its auto löyly sessions every 20 minutes, followed by a powerful blast of hot air. The four-tiered interior circulates heat extremely well, allowing you to enjoy an intense, stimulating sweat experience from the blast. In the spacious room, you can take in the powerful heat with your whole body.
Sauna TypeSalt Sauna
Stove Typefar_infrared
Capacity10people
A steam sauna where you can care for your skin with mud packs and salt while surrounded by the scent of mugwort. The gentle heat softly warms the body, and the synergy of herbs and minerals leaves you refreshed. It is also recommended for those who do not like high-temperature saunas, as well as for women.
Water QualityTap Water
Capacity8people
A cold plunge bath about 90 cm deep. Its sharply chilled water temperature quickly cools down your overheated body after auto löyly. It also accommodates many bathers, letting you enjoy a refreshing immersion that thoroughly cools your whole body.
Closed Days: None
1-11-5 Koyamagaoka, Machida City, Tokyo 194-0215
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