They are architectural units that are delimited on three sides by sidewalks or superimposed platforms, and on the fourth by a pyramid.

Central Square or of the Fertility of the Earth: Space of civic-religious character, delimited by a pyramid to the west and by wide and high superimposed platforms in the three remaining limits. The Unit occupies a space of half a hectare and presents a west-east alignment; it has only one access to the center-east.

Palace or Unit 10: Architectural structure limited on its four sides by roads or streets. It is a closed plaza with its pyramid and an altar, intercommunicated with another closed plaza, which in turn is joined to an elevated platform on which other architectural structures were built. It has three main entrances: one wide and staggered to the west; one also staggered to the north; and a third to the east, which is reached by means of a ramp or corridor.

East Square: Named this way because it is located towards the east end, on the south side of the Acropolis. It is an elevated plaza with facade to the west, delimited by a pyramid built on its east side and by low elongated platforms on its remaining faces, which also contains a pyramid to the north. It has two entrances to the south and a main one to the center-west.