The Mayan pyramid of Kukulcan At Chichen Itza, at the archaelogical site and ceremonial center of the pre-Columbian Maya civilization, Chichen Itza on Yucatan, Mexico. Also known as the "Castillo", it was built in the 10th century by the Toltecs, dedicated to the feathered serpent-god Quetzalcoatl. Steps ascend the middle of each of its four faces, and these represent the serpent..