Introduction to the Pyramid of Castillo: The Pyramid of Castillo (El Castillo), also known as the Pyramid of Quetzalcoatl, Castle, Mayan Pyramid, or Mexican Pyramid, is located in the center of Chichen Itza and is dedicated to Quetzalcoatl. built temple. The foundation of the pyramid is square, with steps rising up on the four sides to the temple at the top. During the spring and autumn equinoxes, at sunrise and sunset, the building's corners cast feathered serpent-like shadows on the pyramid's northern steps, gliding down to the north with the sun's position. After a fatal fall, the top of the pyramid is no longer open to visitors.