The famous monuments of Chichen Itza are over 1500 years old. They are one of the wonders of the Mayan civilization that existed in Mexico thousands of years ago.
The monuments consists of stepped pyramids and columned arcades. Chichen Itza was more than a religious and ceremonial site. It was also a sophisticated urban center and hub of regional trade. the most recognizable structure here is the Temple of Kukulan, also known as EL Castillo. This glorious stepped pyramid demonstrated the accuracy and importance of Mayan astronomy. The Temple has 365 steps- one for each day of the year.
What is truly marvelous is that twice a year, on the spring and autumn equinoxes, a shadow falls on the pyramid is the shape of a serpent. As the sun sets, this shadowy snake descends the steps to eventually join a stone serpent head at the base of the great staircase up the pyramid's side !!!