License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Guido Reni. Triumphal arch surmounted by a statue representing the city of Bologna, buildings seen through the arch below, a temporary decoration for the entry of Pope Clement VIII in Bologna in 1598, 1598. The Metropolitan Museum of Art.