License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Giovanni Battista Piranesi. Chimneypiece in the Egyptian style, from Diverse Maniere d'adornare i cammini (...) (Different Ways of ornamenting chimneypieces and all other parts of houses), ca. 1769. The Metropolitan Museum of Art.