Chichén Itzá,  the ancient city whose name means "in the mouth at the Itzáe's Well", was, in its time of grandeur (between 800 and 1200 A.D.), the centre of political, religious and military power in Yucatán, if not all of South-eastern Meso America.

In its architecture one can observe a gradual change in style, starting with the Puuc style, also shared with Uxmal and other sites in the Penninsula and cluminating with the so-called Mayan Toltec style, due to the architectural similiarities with Tula, capital of the Ancient Toltecs, and with other sites in Central Mexico, such as Oaxaca and the Gulf Coast.

Chichén Itzá was a large city with a great many inhabitants, distributed around the architectural nucleii which we observe as ruins, who had a relatively easy access to the water coming from the various caves and Cenotes of the region.

Sign at the entrance of Chichén Itzá