Chichen Itza was erected in the beginning of the 6th century by the Itzan. During the period of several centuries, the city was defeated, enslaved, deserted and re-settled many times, and then for mysterious reasons, was abandoned forever in the early 15th century. The Maya city of Chichen Itza was already a jungle-shrouded ruin when the Spanish conquistadors and clerics began exploration of this new world. As Europeans paid almost no attention to the ruins, and the existence of this once great Maya city faded from memory. Until rediscovered by explorers, John Lloyd Stephens and Frederick Catherwood in 1839, the lost world of the Maya remained a secret of the Meso-American jungles. Chichen Itza is considered to have been a center of culture, trade, and ceremonial worship, while still shrouded in mystery.
Mayan worship included human sacrifice. There is an enormous natural well called the "Cenote de Sacraticios" within the ruined city. It was truly a "well of souls" for it is the place of Maya sacrifice. And only the most worthy Maya were selected to throw themselves into the still waters below, weighted with heavy stones, so they may bring the graces of the gods to the city. Actually they throw there many beautiful objects of jade, silver, gold, and copper, as they were found in the well. Later the nature of the sacrificial ceremony took on a different dimension, one of brutal executions. And this new "cult of the skull", worship and sacrifice grew and included a “blood sport”, not only to soothe the gods of life and death, but also for the amusement of the ruling class.
The pyramid of Kukulcan is one of the most impressive structures within Chichen Itza. Due to Toltec influence there are two gigantic feathered serpents framing the main stair case into the sky. Kukulcan, a Maya deity is represented as a feathered serpent. "The Castillo" is another pyramid’s name.
This ancient structure was designed in such a way that mysterious acoustical phenomenon occurs. If a chief stood at the top of the structure with a crowed court yard of subjects below he had not to shout, but speak in a normal voice and his voice was magnified many times over. When going down the pyramid, the steps gave off a thunderous resonance with each foot-fall. All that served to make the priests and ruling class seem powerful and god-like.