Chichen Itza Yucatan Mexico Also known as Kukulcan, a feathered serpent deity. The temple consists of seven terraces with stairways on each side. A pair of plumed serpents heads at the base on the north side stairs. On spring and autumn equinoxes, the sun casts a series of triangular shadows creating the illusion of a serpent "crawling down the from the temple. When human hands clap in front of it, the echo mimics the chirping sound of the quetzal bird. Each staircase has 91 steps and when including the temple step adds up to 365. The days of a year. In 2007 this pyramid was named one of the New Seven Wonders of the World.