For health reasons would like to visit some hot water springs in Japan. What's the best one to visit, Beppa or Mount Aso National Park?
It's not really close, but there was this amazing Onsen on the island if Mt Sakurajima to the south. Half in the ocean with an (active) volcano behind you.
There are loads of great Onsen in the hills above Beppu also. about 6 years ago