Japan is synonymous with onsen – hot (mineral) springs. As it should be. Volcanoes, which Japan has in abundance, play a key role in the formation of hot springs. Fire (magma) heats water. Earth adds minerals. Nature provides a magical setting with most hot springs originally being in the open air. People traditionally bathed communally. The very hot water provides relief from the humidity in summer and warmth in winter. These characteristics bring many health benefits. It is no wonder that hot springs are such an important part of Japanese culture. Onsen also draw many tourists to Japan with one-third of visitors recently indicating it was one of their main reasons for travelling. I can understand the elemental allure.