Kumamoto Minamiaso Village
A superb Aso spa resort with natural onsen fed straight from the source and 15 types of bathing experiences
Aso Health Volcano Onsen, located within Great Nature Aso Health Forest, is an onsen in Minamiaso Village, Kumamoto Prefecture. It boasts an impressive 1,000 tsubo (about 3,306 m²) of space for each of the men’s and women’s baths. In the open-air area, a 150 m wooden walkway winds through the grounds, letting you take in the surrounding natural beauty with your whole body. The onsen offers a range of saunas, including a dry sauna where you can sweat at leisure as if taking a forest bath, and a steam sauna surrounded by negative ions. After cooling down in the cold plunge, the mineral-rich natural onsen, fed straight from the source and never recirculated, gently eases away physical and mental fatigue. The grounds also include a warm-stone room called Kenko Onnetsugama Jusan-shu, with 13 types of natural materials. It is a blissful wellness retreat where you can refresh yourself all day long.

The indoor bath area includes an iron cauldron bath where you can enjoy a sulfate onsen rich in three minerals, including magnesium and calcium, fed straight from the source and never recirculated, as well as a beauty bath that leaves the skin feeling smooth. The abundant onsen minerals come into direct contact with the skin, leaving it feeling soft and hydrated after bathing.

The vast open-air area has a variety of baths, including a rock bath made with natural minerals and filled with onsen water fed straight from the source, a fragrant wine bath, and a relaxing reclining bath. Follow the 150 m walkway and take in the breath of nature with your whole body for a deeply restorative experience.

The indoor bath area has a dry sauna where you can sweat at leisure as if taking a forest bath. The open-air area offers a steam sauna surrounded by negative ions and a medicinal-stone steam sauna that evokes the energy of nature. Enjoy a range of heat and steam experiences at your own pace, choosing what suits how you feel that day.

The indoor bath area has a cold plunge to cool you down after warming up thoroughly in the sauna. Alternating between hot and cold bathing helps regulate the autonomic nervous system and leaves you feeling refreshed. The route to the open-air cooling area is convenient, leading to a blissful break as you feel the Aso breeze.
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[Day-use bathing] 11:00–18:00 (last admission)
Minamiaso Onsenkyo
A quiet onsen resort for adults, embraced by the views of Aso’s five peaks and a bath for beautiful skin
Minamiaso Onsenkyo
An onsen resort among the largest in western Japan, with natural onsen water fed straight from the source and huge lava rocks
Minamiaso Onsenkyo
A resort of spectacular views with the Aso panorama, sauna and natural onsen