Pyramid of the Sun, Mexico

The Pyramid of the Sun is the largest building in Teotihuacan and one of the largest inMesoamerica. Found along the Avenue of the Dead, in between the Pyramid of the Moonand the Ciudadela, and in the shadow of the massive mountain Cerro Gordo, the pyramid is part of a large complex in the heart of the city.

The name Pyramid of the Sun comes from the Aztecs, who visited the city of Teotihuacan centuries after it was abandoned; the name given to the pyramid by the Teotihuacanos is unknown. It was constructed in two phases. The first construction stage, around 100 C.E., brought the pyramid to nearly the size it is today. The second round of construction resulted in its completed size of 224.942 meters (738 feet) across and 75 meters (246 feet) high, making it the third largest pyramid in the world, though still just over half the height of the Great Pyramid of Giza (146 metres). The second phase also saw the construction of an altar atop of the pyramid, which has not survived into modern times. 

Pyramid Model

Picture Source: Collected from Internet