Thousands of people from all over the world gather at the ancient Mayan ruins of Chichen Itza in the Yucatan Peninsula, to witness the afternoon shadow of the snake god Kulkulkcan slowly "crawl down" the largest pyramid, El Castillo (www.piramideinn.com). Make your reservations as soon as possible, because accomodations fill up fast.

For more information on this event, visit: http://mexicolesstraveled.com/itzacosmology.htm

For additional information on Chichen Itza and the Spring/Fall equinox please visit: http://www.playa.info/playa-del-carmen-info-mayan-ruins-of-chichen-itza.html