In their rediscovery, the Lost Cities of the world reveal the deep mysteries of our past. Once obscured by the ravages of time, the lives of ancient kingdoms come to life as we explore the ruins of Machu Picchu, Angkor Wat, Petra, Tikal, and Pompeii. And perhaps the greatest lesson we can take from the world"s greatest lost cities, is to make the most of the time we have while we have it.