Who determines the Seven Wonders of the World, and what criteria is used to evaluate these locations? Discover the efforts to promote cultural diversity and preserve man-made monuments during the world's first-ever global vote in 2007 to...

How did the lost city of the Incas remain hidden for centuries? Author explains the mystery Machu Picchu.

This site from the Great Outdoor Recreation Pages provides a good article on how the city of Machu Picchu was lost for more than 400 years!