An onsen is a term for hot springs in the Japanese language, though the term is often used to describe the bathing facilities and inns around the hot springs. As 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.
In Shintoism, the indigenous religion of Japan, bathing is not only a question of hygiene, but also of purifying.
There are around 2,000 onsen in Japan. Onsen are reminders of the refined traditional Japanese lifestyle.