Pyramid of the Sun, Teotihuacan

The Pyramid of the Sun seen head-on from the plaza at Teotihuacan, northeast of Mexico City. At roughly 65 meters it is the largest building in the city, finished around 200 CE by the Teotihuacanos, a people who were neither Maya nor Aztec and whose own name for it is unknown. The Aztecs found the city in ruins centuries later and gave the pyramid the name it carries today. It stands over a cave, which probably explains why it was built exactly here.