A retro public bath founded in the Meiji era, proud of its 100% source steam mist sauna and drinkable natural hot spring
Nagasaki Nagayo Town
Michinoo Onsen is a historic public bath founded in the first year of the Meiji era, located in Nagayo, Nishisonogi District, Nagasaki. It features a dedicated mist sauna that uses the hot spring source vaporized as-is, allowing guests to sweat comfortably without feeling stuffy. The cold water bath uses a household-style tub fed directly with the source spring water, letting visitors enjoy the onsen water as a continuous flow. The mild alkaline simple spring is drinkable and gentle on the skin, leaving a lasting warmth. The rest area serves dishes prepared with onsen water, and the Showa-era retro atmosphere offers a soothing, nostalgic experience.
TypeNatural Hot Spring
A 100% undiluted simple spring with no added water. This mild, weakly alkaline water is said to be good for the skin, and onsen water is used throughout the facility from the baths to showers and faucets. Drinking the water is permitted, allowing you to benefit from the spring both internally and externally.
Sauna TypeMist Sauna
Capacity4people
A carefully crafted mist sauna that vaporizes the hot spring source directly. The compact room heats up thoroughly and lets you sweat comfortably while being less likely to feel stifling. Inhaling steam that contains hot spring minerals also enhances the refreshing effect.
Water QualityHot Spring Water
Capacity1people
A unique cold water bath using a household FRP tub installed in the washing area, into which the source spring is poured directly. The water temperature is mild, in the 20°C range, making it pleasantly not too cold so you can stay in longer. You can enjoy the soft water quality unique to fresh, open-flow source water.
Closed Days: Thursday
284 Kōdagō, Nagayo, Nishisonogi District, Nagasaki 851-2127, Japan
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
A retro public bath founded in the Meiji era, proud of its 100% source steam mist sauna and drinkable natural hot spring
Nagasaki Nagayo Town
Michinoo Onsen is a historic public bath founded in the first year of the Meiji era, located in Nagayo, Nishisonogi District, Nagasaki. It features a dedicated mist sauna that uses the hot spring source vaporized as-is, allowing guests to sweat comfortably without feeling stuffy. The cold water bath uses a household-style tub fed directly with the source spring water, letting visitors enjoy the onsen water as a continuous flow. The mild alkaline simple spring is drinkable and gentle on the skin, leaving a lasting warmth. The rest area serves dishes prepared with onsen water, and the Showa-era retro atmosphere offers a soothing, nostalgic experience.
TypeNatural Hot Spring
A 100% undiluted simple spring with no added water. This mild, weakly alkaline water is said to be good for the skin, and onsen water is used throughout the facility from the baths to showers and faucets. Drinking the water is permitted, allowing you to benefit from the spring both internally and externally.
Sauna TypeMist Sauna
Capacity4people
A carefully crafted mist sauna that vaporizes the hot spring source directly. The compact room heats up thoroughly and lets you sweat comfortably while being less likely to feel stifling. Inhaling steam that contains hot spring minerals also enhances the refreshing effect.
Water QualityHot Spring Water
Capacity1people
A unique cold water bath using a household FRP tub installed in the washing area, into which the source spring is poured directly. The water temperature is mild, in the 20°C range, making it pleasantly not too cold so you can stay in longer. You can enjoy the soft water quality unique to fresh, open-flow source water.
Closed Days: Thursday
284 Kōdagō, Nagayo, Nishisonogi District, Nagasaki 851-2127, Japan
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