Ryuo Radon Onsen Kai-no-Yu
- Yamanashi
- Activities
- Spring
- Summer
- Autumn
- Winter
A medicinal natural hot spring in Kai City boasting Japan's highest radon content. Known as the "Inhalation Onsen," it warms the core and boosts immunity. The facility has a nostalgic Showa-era charm, offering a cozy space for traditional health-conscious travelers to experience genuine Japanese wellness and sauna culture.
Discover “Breathing Onsen” in Japan｜Ryuo Radon Onsen U-topia
Ryuo Radon Onsen Hotel Utopia
よってけし！本物のラドン温泉｜竜王ラドン温泉 湯〜とぴあ
Ryuo Radon Onsen Hotel Utopia
Ryuo Radon Onsen Kai-no-Yu
- Address
- 1300-1 Tomitakeshinden, Kai-shi, Yamanashi
- Website
- https://u-u.co.jp/
- Operator
- Ryuo Radon Onsen U-topia
