Fukushima Inawashiro Town
Nakanosawa Onsen, with one of the highest flows in Japan: milky-white natural onsen water fed straight from the source, at one with the forest
Bandai Meito Resort Bonari no Mori is an onsen resort in Inawashiro, Fukushima Prefecture. Wrapped in the wilderness of Bandai-Asahi National Park, it lets you take full advantage of Nakanosawa Onsen, whose flow ranks among the highest in Japan. The strongly acidic, milky-white natural onsen water is fed straight from the source, never recirculated, and from open-air baths of rock and ancient hinoki you look out over forest and stream. Each main bathhouse also has a dry sauna, where you can sink into deep relaxation in the stillness of the forest air. With a tea lounge and Aizu regional cooking to enjoy as well, it is a retreat of exceptional calm far from the noise of everyday life.

A large rock-built open-air bath and a spacious indoor bath that make the most of the abundant flow. The milky-white water of Nakanosawa Onsen pours in generously, fed straight from the source, never recirculated. From the bath you look out on the lovely contrast of forest and stream through the seasons, from fresh spring green to autumn leaves, for a rustic soak that feels at one with the wild.

A main bathhouse filled with the distinctive milky, cloudy water, and an open-air bath with a beautiful view, its rim made of ancient hinoki. The strongly acidic water wraps the skin softly, and with baths at different temperatures, from hotter to milder, you can take your time savoring this celebrated onsen. It is a blissful space enveloped in forest air.

A spacious private bath rich with the scent of hinoki. The superb water of Nakanosawa Onsen, fed straight from the source, never recirculated, is yours alone. With a step-free, barrier-free design, it lets you enjoy the warmth of this celebrated onsen to your heart’s content in a private space, without a thought for anyone around you.

A semi-open-air bath drawing on the source, in the one and only suite of its kind. In a completely private space where no one will disturb you, you can enjoy a superb soak as often as you like, whenever you like. With the forest view beyond the window all to yourself, the time here is pure bliss.

A quiet dry sauna attached to each main bathhouse. The hot air warms the body slowly and draws out a gentle sweat, bringing a deep detox effect. Used between soaks in the onsen, it sets a pleasant rhythm of warming up and unwinding.
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Day visits: 11:00 to 15:00 (adults and children ¥1,000; may be unavailable on busy days and closing days) Main bathhouse and open-air baths (overnight guests): 3:00 to 23:00 Sauna: 11:00 to 23:00
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