Osaka Osaka City
Directly connected to Bentencho Station. Featuring a 'Garden View Bath' overlooking a Japanese garden of approximately 1,000 tsubo, and open-air baths with natural hot spring water for both men and women. The dry sauna offers automatic löyly every hour, seamlessly transitioning to the cold plunge bath and outdoor air bath. Experience the rhythm of hot and cold in the high-rise cityscape, with a sense of openness during the day and stunning night views. You can also stay at the adjacent Art Hotel Osaka Bay Tower.
A hypotonic, mildly alkaline hot spring that gushes from 1,000 meters underground. It feels gentle on the skin and is less likely to cause dizziness even with prolonged soaking. In the open-air bath with natural hot spring water, the combination of wind and view creates a sensation of relaxation. Move between the garden view bath and alternate baths to gradually enhance warmth and relaxation.
A dry type with a TV. The automatic löyly at 00 and 30 minutes past each hour quickly raises the heat and humidity. The löyly lasts about a minute, generating a large amount of steam, allowing you to work up a good sweat.
Located immediately after exiting the sauna room. The temperature is approximately 16°C. It is an ideal temperature for a cold plunge bath, allowing you to relax and cool your body. After the cold water bath, you can enjoy an outdoor air bath or an indoor air bath while gazing at the expansive garden.
Irregular Holidays
Visited by the Editor-in-Chief
The Editor-in-Chief visited in person in November 2025
Gazing out at a beautiful garden from the open, spacious bath...
Read the full review
Osaka
One of Japan's top saunas — Osaka's most powerful sauna
Osaka
A collection of world baths and Japan's largest 140-person sauna theater
Osaka
A lush premium spa featuring a natural hot spring drawn directly from the source and three types of sauna
JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
64 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.
