Here we can see the beginnings of the Puuc style, marked by smooth facades and, in this case, by its high cresting with modeled stucco decoration. It is a pyramidal building whose shape cannot be determined exactly because of the degree of destruction in which it is found. However, there are remains of the stairway leading to the plateau that is formed at a height of 14 meters. On this plateau, on a platform of vertical walls and with steps to reach it, stands the temple of which only half is preserved. The plan is rectangular and consists of four rooms, also rectangular: two in the center, united by their greater side, parallel to the facade, and two that occupy the headers. On the south wall there is a crestería of more than 4 m of height, whose placement is due to the desire to obtain better visibility, characteristic of some buildings of Yucatan previous to the Toltec influence. The decoration of the façade is simple.

It is one of the most monumental-looking constructions in this area because of its new solution, the imposing proportions and the strength of its reliefs. It presents a more advanced stage of the Puuc style, called mosaic, in which you can see how the stone gives shape to the masks of the god “Narigudo” -a common figure in all the Puuc sites-, straw houses, anthropomorphic sculptures and staggered fretwork.

On the highest point of the valley is located El Palacio, a group of at least seven buildings that are distributed on two levels and went through different stages of construction. The earliest stages are located on the highest part of the hill and do not belong to Puuc architecture. Later, in this same sector, a patio was built, already with Puuc architecture, which must have housed the first ruling lineages of the site.

In the following period, the Mayas attached to the hill an enormous platform of about 150 m long and 70 m wide, on which they built 40 enclosures, most of them attached to the hill. During the Terminal Classic period, El Palacio was the seat of political and religious power. However, the construction of the Palace was never completed, since in the eastern sector a series of unfinished rooms can be seen.

In front of the pyramid there is a square patio, limited by constructions of which only piles of stone remain, with a small mound in the center; the constructions on the western side form, in turn, part of another quadrangular patio. The communication between these two quadrangles is made by means of a great arch that is conserved in good condition and that constitutes one of the most remarkable examples of the monumental Mayan architecture.