A scenic day-use hot spring with löyly, embraced by the natural beauty of Mount Tsukuba
Ibaraki Tsukuba City
"Tsukubasan Onsen Tsukuba no Yu" is a day-use hot spring facility in Tsukuba, Ibaraki Prefecture. Located midway up Mount Tsukuba, it offers a spacious, open setting surrounded by rich natural beauty. The sauna features löyly, allowing you to enjoy a gently enveloping steam experience that is mild yet deeply pleasant. The cold plunge bath is intentionally not chilled, making it comfortable even for beginners. From the open-air bath, you can enjoy a close view of Mount Tsukuba's greenery, and the outdoor bathing deck is equipped with infinity chairs. The soft waters of the simple alkaline spring help leave your skin feeling smooth.
TypeNatural Hot Spring
A simple alkaline hot spring bubbling up from the foot of Mount Tsukuba. It boasts a high alkalinity level of pH10.3, with an exceptionally soft feel and a reputation as a beauty bath. It can be enjoyed in both the indoor bath and the open-air bath, and especially from the open-air bath, you can relax both body and mind while gazing at the lush nature of Mount Tsukuba.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A sauna room equipped for self-löyly. While the room temperature is set to be mild, the steam circulation created by löyly helps you work up a solid sweat. Inside the warmly wooden room, you can spend a calm and reflective moment, taking in the quiet of Mount Tsukuba.
Water QualityTap Water
Capacity2people
The water is intentionally not chilled, with a temperature setting that makes it reassuring even for sauna beginners and those who do not like cold cold plunge baths. One of its features is that you can cool down slowly while enjoying a unique sense of buoyancy. It gently soothes your overheated body after the sauna.
Closed Days: Wednesday
〒300-4352 Ibaraki Prefecture, Tsukuba City, Tsukuba 64-9
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
A scenic day-use hot spring with löyly, embraced by the natural beauty of Mount Tsukuba
Ibaraki Tsukuba City
"Tsukubasan Onsen Tsukuba no Yu" is a day-use hot spring facility in Tsukuba, Ibaraki Prefecture. Located midway up Mount Tsukuba, it offers a spacious, open setting surrounded by rich natural beauty. The sauna features löyly, allowing you to enjoy a gently enveloping steam experience that is mild yet deeply pleasant. The cold plunge bath is intentionally not chilled, making it comfortable even for beginners. From the open-air bath, you can enjoy a close view of Mount Tsukuba's greenery, and the outdoor bathing deck is equipped with infinity chairs. The soft waters of the simple alkaline spring help leave your skin feeling smooth.
TypeNatural Hot Spring
A simple alkaline hot spring bubbling up from the foot of Mount Tsukuba. It boasts a high alkalinity level of pH10.3, with an exceptionally soft feel and a reputation as a beauty bath. It can be enjoyed in both the indoor bath and the open-air bath, and especially from the open-air bath, you can relax both body and mind while gazing at the lush nature of Mount Tsukuba.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A sauna room equipped for self-löyly. While the room temperature is set to be mild, the steam circulation created by löyly helps you work up a solid sweat. Inside the warmly wooden room, you can spend a calm and reflective moment, taking in the quiet of Mount Tsukuba.
Water QualityTap Water
Capacity2people
The water is intentionally not chilled, with a temperature setting that makes it reassuring even for sauna beginners and those who do not like cold cold plunge baths. One of its features is that you can cool down slowly while enjoying a unique sense of buoyancy. It gently soothes your overheated body after the sauna.
Closed Days: Wednesday
〒300-4352 Ibaraki Prefecture, Tsukuba City, Tsukuba 64-9
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more