Discovered by John L. Stephens in 1841, the paramid was built by the Mayans. They took the Mayan calendar and social system and used them both to build their temple. The Mayans were very smart with math and thought of things that we would not such as, numerical details regarding the location of this structure that could not have all occurred by accident. Each side of the pyramid is made up of nine larger tiers or layers with a staircase in the center of each side leading to the temple at the top. Each stairway consists of ninety one steps, with one step at the top common to all four sides, for a total of three hundred and sixty five steps, the exact number of days in a solar year.