Built in the 16th century by the Spanish on the ruins of Tenochtitlan, the old Aztec capital, Mexico City is now one of the world's largest and most densely populated cities. It has five Aztec temples ...

Mysteries surround the archaeological complex northeast of Mexico City whose pyramids—the Pyramid ... The 2011 discovery of a 2,000-year-old green serpentine mask at the base of the Pyramid ...

Mexico City is a sprawling metropolis that can take many days to absorb, but the transportation system is organized to facilitate inter-city travel. Mexico City consists of more than 350 different ...