The Pyramid of Kukulcán or as the
Spanish called it El Castillo (The Castle) is located in Mexico at
Chichén-Itzá. This giant pyramid was
constructed around 1100-1300 A.D. in what is called the Maya Toltec
Architectural Style. Each of the four sides has 91 steps.
When you add the platform at the top, that makes 365 steps, one for each
day of the year.
At the foot of the northern stairway
heads of Kukulcán can be seen. They compliment the impressive effect of
the descent of Kukulcán during the Equinox. At mid afternoon on the days
of the Equinox the shadow that covers the northeast angle of the pyramid
is reflected on the stairway and forms triangles of light and shade that
imitates the movement of a serpent.
This effect is more impressive because
it touches the large head of Kukulcán at the
bottom of the stairway, making it seem as though the serpent was slowly
and magically descending the pyramid. This effect could only be obtained
by precise architectural and astronomical measurements.