Beppu in Oita prefecture, on the eastern side of Kyuushu, is probably Japan’s largest concentration of  hot springs in one area. There is a lot of geothermal activity in this area and it lends to a huge multitude of Onsens to choose from. In fact, there are over 100 onsens at which you can bathe.

Beppu is an interesting area to wander around as there is literally water and mud bubbling from the ground. It is a geothermal spectacle. The onsens come in many varieties and there are various hell courses, massage options, and even hot sand which you can lie on, or bury yourself in. Just to the west of Beppu is Yufuin Onsen, at the foot of Mount Yufu. There are 12 public hot springs here and the famous Shitanyu Onsen (mixed onsen) at the foot of lake Kinrinko.