In Japan, hot springs bubble up everywhere, and for hundreds of years Japanese people have enjoyed them mainly for health benefits and socializing. Bathing at onsen is a great way to enjoy Japan—not just to try the various types and experience their reputed beneficial physical effects, but also to enjoy their natural settings and perhaps a leisurely stroll around the spa towns where they are often located. You might also be surprised to find that onsen waters come in different colors, green or black, for instance; many such waters are thought to help smooth the skin or relieve back pain. So, whether you’ve never tried onsen before or are already a habitué, it’s an experience not to be missed and one that you’re likely to enjoy.