Soak in Japan's three classic hot spring towns
Kusatsu, Arima and Gero have been called Japan's three finest hot springs since the 1600s, and each town has public baths you can use on a day visit without staying overnight. The water is different in each: strongly acidic in Kusatsu, rust-brown and salty in Arima, smooth and alkaline in Gero. Arima is about an hour from Osaka, while Kusatsu and Gero are better with a night at a ryokan.