License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Pierre François Beaumont. Ruins of the Temple of the Sybil in Tivoli (Ruines du Temple de la Sibille a Tivoli) after the painting in the collection of Madame la Comtesse de Verrue. The Metropolitan Museum of Art.