800 to 1200 AD The Castle is composed of two structures superimposed on one another. The later pyramid was built over an earlier structure. The newer pyramid is about 55 meters (180 feet) on each side and has nine stepped sections (terraces) rising up to 24 meters (78 feet). Archeologists believe that the nine different floors symbolized the "Region of the Dead" to the ancient Maya.

Climbing to the top of the Castle one has an excellent view of the surrounding area of Chichén Itza. Here visitors will also find the upper temple with many images of Chaac, the Maya rain god.