Framing a Lost CityWhen Hiram Bingham, a historian from Yale University, first saw Machu Picchu in 1911, it was a ruin obscured by overgrowth whose terraces were farmed a by few families. A century later, Machu Picchu is a UNESCO world heritage site visited by more than a million tourists annually. This remarkable transformation began with the photographs that accompanied Binghams article published in National Geographic magazine, which depicted Machu Picchu as a lost