Kusatsu Onsen #japan #gunma In Japan you wash & rinse outside the tub. Everyone uses the same tub water for soaking only. Onsens are places to enjoy hot springs at inns, hotels & ryokans (Japanese traditional inns). Rotenburo are outside hot springs where nature can be enjoyed. Sentos are public bath houses found in residential neighboods. Ofuro is the bath in the home.