In this artwork, how is the Construction of the Colonial Panel elucidated?
Workmen of various skin colors are pictured below constructing huge buildings in Oaxaca.During the colonial period, laborers like those you see above built over two dozen colonial churches and convents in el centro of Antequera.
An order of 1535 mandated, “the indigenous of the city of Antequera and towns of the bishopric of Oaxaca, will help to build the churches” so labor was free. It took 26 years to construct the stonework of the Cathedral of Oaxaca, starting in 1535. And structures had to be rebuilt after earthquakes. It was finally consecrated  on 12 July 1733.
Based on the images above and  below, the building being constructed in the mural is the cathedral viewed from a slightly different angle.Studies of the churches of the State of Oaxaca include the santos in the 16th-century Dominican churches of Oaxaca, Mexico.
Oaxaca Cathedral of Oaxaca Dominican colonial Antequera mural