Day Use
YesOccasional unscheduled closures; calling ahead is recommended.
Adults 500 yen, children free.
Bathing & Water
Open-air outdoor bath
Enclosed indoor bathing area
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
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
RiverHighlights
Drinking SpringPrograms
About
Iwakura Hot Spring (岩倉温泉, Iwakura Onsen) has been running since 1647 and is a member of the Nihon Hito wo Mamoru Kai (日本秘湯を守る会), the society that looks after Japan's lesser-known springs. The baths are indoor only, fed by a kakenagashi flow of clear, colorless water that locals say warms you through and helps you sleep, earning it the nickname Fukai Nemuri no Yu (深い眠りの湯, deep-sleep spring). A small stream runs right outside the building. The inn took serious flood damage in 2020 and was repaired; the okamisan (innkeeper) kept it going. Day use is available.
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Last updated June 25, 2026