Groundwater Water Sauna & Onsen Facilities in Japan

Discover 133 sauna and onsen facilities with groundwater water across Japan. Find your perfect sauna with detailed information on temperature, water quality, and operating hours.

Showing 131 to 133 of 133 facilities
Hanayu Sky Terme Resort

Hanayu Sky Terme Resort

♨️Natural Hot Spring
♨️Flow-through
Sauna🔥
•Cypress Sauna95°C
Cold Bath❄️
•Cold Bath17°CGroundwaterFlow-through
Hours🕐:07:00〜09:30, 10:00〜23:00
Natural Hot Spring Isesaki Yumaaru

Natural Hot Spring Isesaki Yumaaru

♨️Natural Hot Spring
♨️Flow-through
Sauna🔥
•タワーサウナ100°C
Cold Bath❄️
•Cold Bath18°CGroundwaterFlow-through
Hours🕐:09:00〜00:00
Station Natural Hot Spring Mizunuma no Yu

Station Natural Hot Spring Mizunuma no Yu

♨️Natural Hot Spring
Sauna🔥
•Sauna85°C
Cold Bath❄️
•天然の地下水100%の水風呂16°CGroundwaterFlow-through
Hours🕐:09:00〜21:00
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