Onsen and baths in Kiryu

A recently renovated (spring 2025) onsen built directly into Mizunuma Station on the Watarase Keikoku Railway, with one small indoor and one small outdoor bath, a well-liked self-loyu sauna, an attached restaurant, and frequent complaints that admission is steep for the small bathing space.

A large gym-attached super-sento with many indoor and outdoor baths, sauna, RV Park lodging, and a restaurant, but reviewers repeatedly flag rowdy gym-member regulars in the sauna and a coin-operated hair dryer.

An 80-plus-year-old wood-fired public bathhouse (sento) in Kiryu, revived by a young couple, with two indoor soaking tubs (hot ~43C and lukewarm), no shampoo/soap provided but purchasable, no sauna, and irregular hours/holiday closures.

A 1912 wood-fired public bathhouse (sento, not a natural hot spring) in Kiryu that closed in 2018 and was lovingly revived by a new owner, offering two hot indoor tubs, retro architecture, a resident dog, and modern electronic payment.

A tiny, Showa-era neighborhood sento in Kiryu with two small wood-fired tubs (one scalding hot, one cooler/jetted), run by a friendly attendant and beloved by regulars.

Baths that admit you without an overnight stay

Rotenburo, confirmed by visitors

Gensen kakenagashi, not recirculated

Often with a cold plunge