Day Use
Yes毎月第1月曜日
Adults (middle school+) ¥450, elementary school children ¥100. Towel rental ¥250, bath towel rental ¥850.
Bathing & Water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Uses natural hot spring water
Capabilities
Private bath available for day-use visitors or hotel guests to reserve
Shared bathing area for all genders
Policies & Services
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Views
MountainsAbout
Domeki Onsen (百目鬼温泉) was established in 2006 by 70 local households who pooled together to build it. The water runs fully kakenagashi, faintly salty and warm, straight from the source without recirculation. The main draw is a large open-air rock bath where you can see the Zao (蔵王) mountains and the Yamagata city skyline. There's also an indoor bath on a rotation schedule between the men's and women's sides, plus a sauna added in a 2018 renovation. Locals call it the "Ultraman Onsen" because the heat is intense enough that the staff recommends soaking in short bursts.
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