I went to Japan last November and planned to hit up the country's collection of ancient hot spring baths. I brought along this "Hidden Hot Springs" guide, but never used it. Total bummer.
That's why I'm vowing to hit up a stateside spring sooner than later*. Whether you need a relaxing soak, or you're looking for a potential "healing", here's how to find hot water spots [via Cool Tools]:
No gadgets allowed! Turn off your cell phone. Don't pull out a PMP. And definitely don't take pics of naked people (unless you ask for permission, which actually now that I think of it, is even weirder than just taking a pic in the first place).
[image by Spencer Tunick]
*Be sure to go soon. Hot springs have a tendency to dry up.