14 once-great lost cities
Wed, May 21, 2014 at 3:53 PM
Legendary cities like Atlantis or El Dorado will always be mythical, but there are scores of other once-magnificent lost cities of the past that have been found. From Machu Picchu to Babylon to Troy, the ruins of these ancient metropolises remind us that no civilization is too big to fail. Here's our list of the greatest lost cities that have been found.