Iwaki Yumoto Onsen
This well-known hot spring is thought to be one of the oldest hot springs in Japan. The list of most ancient springs also includes Dogo Onsen (Ehime Prefecture) and Arima Onsen (Hyogo Prefecture). It is said that Iwaki Yumoto Onsen as first used for its hot spring water around one thousand years ago. Water is pumped into the numerous hotels and ryokan in the town at a rate of five tons per minute. The springs have various benefits such as having skin-beautifying properties.