Janet Jarman In the fall of 2003, a heavy rainstorm swept through the ruins of Teotihuacán, the pyramid-studded ... forms the spine of modern-day Mexico. Inside the basin the climate is mild ...

(Getty Images)| In Mexico's ancient city of Teotihuacán – a UNESCO World Heritage Site that once boasted a population of more than 125,000 people – visitors will find the Pyramid of the Sun.

An often overlooked ancient pyramid in Mexico was filled with pools of a ... were actually key pieces of an energy-generating device inside the structure. To date, archeologists have only found ...

From exploring Mexico's diverse cities and magic towns ... its most impressive structure is by far the Pyramid of the Sun.