It is the tallest and most important building on the site located on the south side of the central plaza, it is a pyramidal basement composed of nine staggered bodies with rounded corners 30 meters per side at its base and 18 meters high, with limited stairs with its rafters on each of its sides.

Of the temple built in the upper part of the basement, only the remains of its walls are preserved, on the ground it is similar to the Chichén Itzá Castle, the main facade is oriented to the north, with a triple entrance delimited by two columns that had decoration of snakes.

Castillo de Kukulcán de Mayapán

In the southeast corner of the pyramid a substructure was discovered, in the second and third body of it there appeared representations in modeled stucco of beheaded warriors. The finding of a maxilla and fragments of human skulls inside the niches indicate that they were used to place heads covered with stucco, a practice related to the cult of death.