Nishiyama Onsen Keiunkan
西山温泉 慶雲館にしやまおんせん けいくもかん
Day Use
NoBathing & 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
Private onsen bath in guest rooms, for overnight guests only
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
Relaxation space for after bathing
On-site or nearby parking available
Views
River
MountainsHighlights
Cave Bath
GanbanyokuAbout
Keiunkan (慶雲館) holds the Guinness record as the world's oldest hotel, tracing its founding to 705 AD when a spring was first opened in this Yamanashi mountain valley. Six baths draw from four natural springs, all kept flowing in true kakenagashi (源泉掛け流し). The fourth-floor open-air Bokei-no-yu (望渓の湯) looks out over the Hayakawa river gorge, while the stone-lined Hakuho-no-yu (白鳳の湯) sits at river level; two private open-air baths are available by reservation. The water is colorless and leaves skin noticeably smooth. Every room has its own in-room spring bath. A cave bath and ganbanyoku (岩盤浴) stone-floor sauna, both added in the 2026 renovation, round out the bathing options.
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