15. Rio Quente Hydrothermal Springs—Caldas Novas, Goiás, Brazil
To cross into Brazil, Americans need to obtain a travel visa. After that, the springs in Goiás are only a day trip away from most airports. Goiás is a tropical paradise in the valley. Development of the tourism aspect of the area around Caldas Novas has transformed it into something of a health retreat destination. The natural spring heats up the Rio Quente, which means Hot River. There, one can find everything from traditional to modern lodging, a variety of eateries, and parks. One outfit, Hot Park, turned the destination into a water park.
