Bingham reconfirmed what he thought he'd found at Machu Picchu—the fabled last stronghold of the Inca. With Machu Picchu, he'd absolutely found a lost city, just not the lost city. Another of ...

At Mesa Verde, Spanish for "green table," multistoried dwellings fill the cliff-rock alcoves that rise 2,000 feet above Montezuma Valley. Remarkably preserved, the cliff dwellings cluster in ...