Shibahara onsen - Kayanoya
柴原温泉 かやの家しばはらおんせん かやのや
Kaya-wood baths at a secluded ryokan in Oku-Chichibu
Day Use
NoBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
The facility's bath inventory, given twice (about page and hotspring page), lists only the two shared gender-separated baths with no separate private/family bath.
Private onsen bath in guest rooms, for overnight guests only
Room equipment list covers only toilet and washbasin; no room bath. The bath inventory (rotenburo/indoor bath, one each for men/women) is a separate, shared facility.
Shared bathing area for all genders
Policies & Services
Welcomes children and families
Wooden building carries sound easily; children are only accepted if old enough to stay quietly in the room.
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
MountainsPrograms
About
A small ryokan tucked into the mountains of Oku-Chichibu, open since 1954 and a member of Nihon Hito wo Mamoru Kai (日本秘湯を守る会), the society for preserving Japan's secluded hot springs. The baths, both indoor and outdoor, are built from kaya (かや) wood, a slow-growing Japanese tree with a dense, smooth grain traditionally used for go boards. The spring water runs clear with a faint sulfur quality and is gently heated. Indoor and outdoor sets are gender-separated and swap sides at 22:00. No day use; overnight stays with in-room meals only.
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Last updated September 22, 2026