Chichén Itza, in the Mexican state of Yucatán, is an impressive archaeological site from the Post Classic Mayan era.
The Temple of Kukulkan, also know as El Castillo, is a Mesoamerican step-pyramid that dominates the center of the Chichèn Itza.
Kukulkan was the Yucatec Maya Feathered Serpent deity closely related to the god Quetzalcoatl known to the Aztecs and other central Mexican cultures of the Postclassic period.
The pyramid consists of a series of square terraces with stairways up each of the four sides to the temple on top. Sculptures of plumed serpents run down the sides of the northern balustrade. During the spring and autumn equinoxes, the late afternoon sun strikes off the northwest corner of the pyramid and casts a series of triangular shadows against the northwest balustrade, creating the illusion of a feathered serpent “crawling” down the pyramid. The event has been very popular, but it is questionable whether it is a result of a purposeful design. Each of the pyramid’s four sides has 91 steps which, when added together and including the temple platform on top as the final “step”, produces a total of 365 steps.
It is one of the most recognized and widely visited pre-Columbian structures in Mexico.

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