One of Kyushu's largest spa resorts with panoramic outdoor baths overlooking the sea of Nagasaki and a diverse selection of saunas
Nagasaki Nagasaki City
Nagasaki Onsen Ark Land Spa is a large spa theme park on Iojima in Nagasaki City. The main public bath features a dry sauna, and after cooling down in a mild-temperature cold plunge bath you can enjoy a deeply relaxing sea-view session in the panoramic outdoor open-air bath. The facility also offers a swimwear-required spa theme park area, tent saunas, and Thai-style herbal tents that give the complex a distinctive lineup of saunas. Together with a natural chloride hot spring that wells up from 1,180 m underground, you can enjoy a wide variety of bathing experiences all day long.
TypeNatural Hot Spring
A natural hot spring rich in salt that wells up from 1,180 m underground. In addition to the expansive panoramic outdoor open-air bath where you can feel the sea breeze, there are rock baths fed by the facility's own source via continuous flow. Experience a sublime healing sensation as if enveloped by the sea.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A calm dry sauna where healing music plays. There is no TV, so you can quietly focus on yourself while sweating. The temperature is set to allow you to feel ample heat and promote comfortable perspiration.
Sauna TypeDry Sauna
A swimwear-required tent sauna available for a limited time. It uses EX-PRO tents with excellent insulation and heat retention, equipped with a Finnish stove, where you can experience aromatic löyly. Surrounded by negative ions and fragrance, you can enjoy supreme relaxation.
Water QualityTap Water
Capacity2people
A compact cold plunge bath located near the sauna room. The water temperature is set mildly so you can stay in longer and cool down slowly. After the cold plunge bath, we recommend moving to the panoramic outdoor open-air bath overlooking the sea for a liberating outdoor relaxation.
Closed Days: None
1-3278-3 Iojima-cho, Nagasaki City, Nagasaki 851-1201, 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
One of Kyushu's largest spa resorts with panoramic outdoor baths overlooking the sea of Nagasaki and a diverse selection of saunas
Nagasaki Nagasaki City
Nagasaki Onsen Ark Land Spa is a large spa theme park on Iojima in Nagasaki City. The main public bath features a dry sauna, and after cooling down in a mild-temperature cold plunge bath you can enjoy a deeply relaxing sea-view session in the panoramic outdoor open-air bath. The facility also offers a swimwear-required spa theme park area, tent saunas, and Thai-style herbal tents that give the complex a distinctive lineup of saunas. Together with a natural chloride hot spring that wells up from 1,180 m underground, you can enjoy a wide variety of bathing experiences all day long.
TypeNatural Hot Spring
A natural hot spring rich in salt that wells up from 1,180 m underground. In addition to the expansive panoramic outdoor open-air bath where you can feel the sea breeze, there are rock baths fed by the facility's own source via continuous flow. Experience a sublime healing sensation as if enveloped by the sea.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A calm dry sauna where healing music plays. There is no TV, so you can quietly focus on yourself while sweating. The temperature is set to allow you to feel ample heat and promote comfortable perspiration.
Sauna TypeDry Sauna
A swimwear-required tent sauna available for a limited time. It uses EX-PRO tents with excellent insulation and heat retention, equipped with a Finnish stove, where you can experience aromatic löyly. Surrounded by negative ions and fragrance, you can enjoy supreme relaxation.
Water QualityTap Water
Capacity2people
A compact cold plunge bath located near the sauna room. The water temperature is set mildly so you can stay in longer and cool down slowly. After the cold plunge bath, we recommend moving to the panoramic outdoor open-air bath overlooking the sea for a liberating outdoor relaxation.
Closed Days: None
1-3278-3 Iojima-cho, Nagasaki City, Nagasaki 851-1201, 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