Cortona's huge "Allegory of Divine Providence and Barberini Power" marks a watershed in Baroque painting. Following the architecture of the room, he created the painted illusion of an open airy architectural framework against which figures are situated, usually seen 'al di sotto in su' apparently coming into the room itself or floating far above it. The ornamented architectural framework essentially forms five compartments. The central and most significant part celebrates the glorification of the reign of Urban VIII in a light filled scene populated with allegorical figures and Barberini family emblems.