Oobuka onsen
大深温泉おおふかおんせん
Day Use
Yes500 yen for day-use bathing; 600 yen + bathing tax for up to 2 hours with ondol
Bathing & Water
Open-air outdoor bath
Enclosed indoor bathing area
Uses natural hot spring water
Capabilities
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
On-site or nearby parking available
Highlights
GanbanyokuAbout
A plain, no-frills bathhouse in the Hachimantai highlands of Akita. The spring is sulfur water, run fresh without recirculation, into separate indoor baths for men and women. There are no washing facilities or shampoo, so you come purely to soak. Two ondol (温床) heated-floor huts sit alongside for resting after your bath. The place has historically operated as a 湯治場 (yujiba), a slow-cure therapeutic stay spot, and is only open seasonally. As of 2025 it has been closed with no confirmed reopening date.
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