Uchinomaki Onsen
This hot spring town with 80 individual water sources was once a beloved retreat for writers. Uchinomaki has over 20 hotels and inns, as well as six public baths that visitors can enjoy for a small fee. Each bath is fed by a different water source, so there is a variety of temperatures and mineral contents, and some of the outdoor baths offer panoramic views of Aso’s five peaks.