Fodor's Expert Review Sai-no-Kawara Open-Air Bath

For a soak in the open air, try this expansive bath at the western end of Kusatsu village, which has pleasing scenery by day and lots of stars by night. Known for its milky waters, the bath can hold up to 100 people at a time. It's a 15-minute walk west from the Kusatsu bus terminal.