Hear how people of all ages enjoy a day at the baths in Budapest, where doctors commonly prescribe a relaxing day at the spa. Then learn about a sacred geothermal river located deep in Amazonian Peru: It's huge, deadly hot, and might contain clues to the origins of life on Earth. And get advice for enjoying the splendor of Padua, located just half an hour from the crowds of Venice, and home to one of Europe's oldest universities.

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