"Taking a quick trip away from the Maya world and up to the Valley of Mexico puts us in the heart of Teotihuacán. No one knows for sure who built Teotihuacán, as it shows evidence of Toltec, Totonac, Maya, Mixtec, and Zapotec cultures. One of the largest ancient cities in the Americas, it was built about 1,000 years before the arrival of the Aztecs. Today it is most famous for its two main pyramids: the Pyramid of the Sun and the Pyramid of the Moon." - Travel + Leisure Editors