The view is from the riverbank opposite the city, where several groups of people are spread out, enlivening the composition. In the background one can see Saragossa´s main buildings and Felipe IV entering the city. The work was commissioned by Prince Baltasar Carlos, who indicated the exact viewpoint from which it was to be painted, and the artist used it as an opportunity to recreate a magnificent urban landscape. The importance of the river, the sky and the groups of people clearly relates this composition to Flemish models. The Virgin of the Pillar borne by angels was originally depicted in the sky, but it was covered in the nineteenth century because it had almost completely faded. For several decades, the technical quality of this work and the manner in which the son-in-law and disciple of Velázquez had assimilated his master´s style led many to think it was a collaborative work. The foreground with its group of figures was attributed to Velázquez while Mazo was thought to have painted the urban scene. Now, however, the entire work is attributed to the latter.