El Mercado ( The Market ) was named by the Spanish, but its precise function is under debate by scholars.
It is very large, colonnaded building with a spacious interior court. The interior gallery space is unpartioned and open, a large patio lies in front of the only entrance, accessed by a broad stairway.
There were three hearths and grinding stones found in this market, which scholars normally interpret as evidence of domestic activities, but because the building offers no privacy, scholars believe it was likely a council house or ceremonial function. This building clearly is a Toltec construction.