When visiting Japan, travelers can stay at a traditional ryokan with a communal onsen or opt for a private dip in an open-air bath like this one in Fuji-Hakone-Izu National Park.

An curved arrow pointing right. At the Yunessun Spa and Resort in Hakone, Japan visitors can bathe in hot springs filled with popular beverages such as red wine, green tea, sake and coffee.

Hakone in Kanagawa Prefecture has reclaimed its position as the nation’s most popular hot spring resort after being surprisingly ousted last year, according to a survey. In 2022, the Kusatsu ...