MEXICO, Chichen Itza: El Castillo de la Serpiente Emplumada, Castle of the Feathered Serpent. A.D. 750-1200. ☾ ☀ ☽The 91 steps. El Castillo is a 75-foot-tall Mayan pyramid with 365 steps, one for each day of the year. Each of the temple’s four sides has 91 steps, and the top platform makes the 365th.