Teotihuacan has three pyramids: Pyramid of the Sun ... were the largest Mayan city ever discovered in Campeche State.

Many of the best things to do in Campeche are in el Centro – the walled city, a UNESCO World Heritage Site. The old city wall ...

Dunn spent 30 years conducting computer analyses of the pyramids, landing on the theory that the ancient Egyptian builders had access to highly refined tools, modern construction techniques ...