Onsen (温泉) is the Japanese name for a hot spring; the term also extends to cover the bathing facilities and traditional inns frequently situated around a hot spring. As a volcanically active country, Japan has thousands of onsens scattered throughout all of its major islands. Onsens come in many types and shapes, including outdoor (露天風呂 or 野天風呂, roten-buro or noten-buro) and indoor baths (内湯, uchiyu). Baths may be either publicly run by a municipality or privately, often as part of a hotel, ryokan, or bed and breakfast (民宿, minshuku).
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