Hyogo Nishinomiya City
A resort of natural hot springs from 1000m underground and open-air bathing with the sea breeze
"Naruo Onsen Kumano no Sato" is a day-use hot spring facility in Nishinomiya, Hyogo Prefecture. It features luxurious baths where you can enjoy a natural weakly alkaline spring water drawn from 1000m underground in free-flowing form. There are two distinct bath areas, one in a Japanese style and the other in a Bali-inspired style, and the facility is equipped with a full-fledged far-infrared sauna and a mild salt sauna. Relaxing in the open-air bathing area, where the sea breeze blows through, is especially refreshing, offering a resort-like atmosphere that helps you forget the everyday.
A natural weakly alkaline hot spring that bubbles up from 1000m underground. It comes with a free-flowing bath filled with 100% source water, letting you feel the power of fresh hot spring water directly. The water has a smooth, gentle texture, and after bathing your skin feels soft and moisturized.
An infrared sauna equipped with a gas stove. While the temperature is set mildly, the humidity is kept at a comfortable level, making it easy to sweat quickly without feeling overly oppressive. The Japanese-style and Bali-inspired spaces have different atmospheres, allowing you to take your time and face yourself in quiet reflection.
A salt sauna where you apply salt to your body and slowly work up a sweat. By spending time in the low heat, dead skin cells are gently removed and your skin becomes smooth. It is also recommended for people who do not like intense heat.
A spacious cold plunge bath with a comfortably refreshing temperature. Even for those who are not fond of cold baths, the setting is designed so you can cool down gradually and comfortably. The flow to the open-air bathing area is smooth, guiding you into a break where you can feel the sea breeze.
Irregular Holidays
Visited by the Editor-in-Chief
The Editor-in-Chief visited in person in May 2026
A Return Visit After 10 Years, and an Unquenchable Sauna Hunger
Read the full review
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JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
57 SELECTIONS
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.
