Hubert Robert (1733–1808) was a French painter trained in Paris and active during the transition from Rococo to Neoclassicism. He spent eleven years in Italy (1754–1765), where he studied under Giovanni Paolo Pannini and absorbed the capriccio tradition of rendering classical ruins within idealized landscapes. Upon his return to France, he became a member of the Académie Royale de Peinture et de Sculpture and served as designer of gardens for Louis XVI, notably at Versailles.
Robert specialized in capricci, semi-fictitious architectural fantasies, depicting Roman and French ruins enveloped in luminous, atmospheric settings. His works, such as "The Colonnade of St. Peter’s, Rome, during the Conclave" (c. 1769), combine precise topographical observation with imaginative recomposition, often animating scenes with small figures engaged in quotidian or picturesque activities.
The technique employs a fluid, sketch-like brushwork and a restrained palette of ochres, greens, and blues, foreshadowing plein-air practices of the following century.
During the French Revolution, Robert was imprisoned but escaped execution, later becoming a founding curator of the Musée du Louvre. His influence extended to Romantic landscape painters, who adopted his synthesis of archaeological accuracy and poetic invention. Works such as "The Fountains" (1787–88) entered major collections, including the Art Institute of Chicago, securing his role in the development of 19th-century architectural fantasy.