道の駅 両神温泉薬師の湯みちのえき りょうかみおんせんやくしのゆ
Adult day-use bathing is about 700 yen, children (elementary school age and under) about 300 yen. One 2026 review mentions a 770 yen rate for visitors from outside the prefecture, with a one-time 10% discount via the roadside-station stamp rally book; this may be a resident/non-resident pricing tier, unconfirmed.
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
This review predates the March 2024 renovation; a 2026 review separately confirms general amenities (アメニティあり) without detailing shampoo specifically.
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Yakushi-no-yu is the bathing wing of a roadside station (michi-no-eki, 道の駅) in the mountains of Ogano, on the Chichibu side of Saitama. There is just one indoor bath, fitted with jets and a bubble section, and reviewers note the water feels distinctly smooth and slippery on the skin. There is no sauna and no outdoor bath, so it's a quick, no-frills soak rather than a destination onsen. The place doubles as a stop on a touring route, with a free rest area where you can stretch out on tents and hammocks, an attached restaurant, and parking that includes a sheltered spot for motorcycles.
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Last updated July 22, 2026