Mysteries surround the archaeological complex northeast of Mexico City whose pyramids—the Pyramid of the Moon and the even larger Pyramid of the Sun—remain popular tourist attractions.

(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.

From exploring Mexico's diverse ... Pyramid of the Sun. The largest structure of its kind in the entire Western Hemisphere,the pyramid is accompanied by the Pyramid of the Moon, which is ...

Recent expeditions in Mexico have uncovered 12 sets of ... the Temple of Quetzalcoatl, and the Pyramids of the Sun and the Moon. According to UNESCO, it was one of the most powerful cultural ...