Oobuka onsen
大深温泉おおふかおんせん
Bare-bones sulfur bathhouse with ondol huts in Hachimantai
Day Use
YesTypically closed for winter from mid-October to early May. Closed as of 2025; reopening date unknown.
500 yen for day-use bathing; 600 yen + bathing tax for up to 2 hours with ondol
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
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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Last updated September 19, 2026