630 Portugal's Art and Architecture; Breakfast With Polygamists; Jack London's Yukon

Travel writer Dave Seminara tells us how curiosity led him to meet with healers in the jungles of Nicaragua and Belize. Plus, Richard Grant tells us how a Yukon winter in Dawson City inspired Jack London to become a writer; tour guides from Lisbon point out the art that colors the streets of Portugal; and we get a close-up appreciation of Leonardo's Mona Lisa.

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