Discover the historical secrets of Cairo and Ancient Egypt from the Great Pyramid of Giza to the first pyramid ever built. Explore a hidden Roman fortress and uncover a well deep in the rock below the Arabic citadel of Saladin.
An investigation into why the great pharaohs of Egypt abandoned the pyramids of Giza and chose a secret cemetery in the Valley of the Kings in which to be buried; a team looks for clues to identify human remains found in looted graves.
Cities of the Sky explores the creation of some of the ancient world's largest and most splendid cities. Were people across Native America inspired by celestial phenomenon to build their communities? Answers are revealed in American urban centers that bloomed from the Mexican jungle, a massive multi-cultural city in Central Mexico that is among the largest urban centers in history, and the capital of South America's greatest empire.