An onsen (温泉) is a term for hot springs in the Japanese language, though the term is often used describe the bathing facilities and inns around the hot springs. A volcanically active country, Japan has thousands of onsen scattered along its length and breadth. Onsen were traditionally used as public bathing places and today play a central role in directing Japanese domestic tourism. Onsen come in many types and shapes, including outdoor (露天風呂 or rotenburo) and indoor baths. Baths may be either public run by a municipality or private often run as part of a hotel, ryokan.
This hot spring is noted in Japanese mythology "Manyoushu" which is the first written book in Japan. So, this area has about 2000 years of history. The town was built around 1575 by Takeda. The stone stairs located in the middle of the town were actually built by this time.

















