Interior of a Picture Gallery with the Collection of Cardinal Silvio Valenti Gonzaga

The Interior of a Picture Gallery with the Collection of Cardinal Silvio Valenti Gonzaga, painted in 1740 and now at the Wadsworth Atheneum, is among Panini's most historically significant works because it records an actual collection — that of the powerful Cardinal Secretary of State under Benedict XIV — within an imaginary architectural setting. Valenti Gonzaga was a passionate collector who amassed one of Rome's finest cabinets of painting and sculpture during the 1730s and 1740s, and Panini's commission to document the collection served both as a tribute to the cardinal's taste and as a sophisticated form of catalogue painting. The Wadsworth Atheneum canvas shows hundreds of paintings densely hung on imaginary walls, with the cardinal himself present among visitors and connoisseurs. The format was subsequently developed by Panini into the more famous Modern Rome and Ancient Rome gallery paintings, making this work his crucial prototype for the genre.

The challenge of rendering dozens of individual paintings convincingly within the overall composition was met by Panini through a hierarchy of detail: works nearest the viewer are rendered with sufficient precision to suggest individual authorship, while those higher on the wall or further away are more generalised in treatment. The spatial illusion of the gallery interior is constructed through a careful single-point perspective.