License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Michele Marieschi. Plate 9: The bridge and market of the Rialto, Venice, from "Views of Venice" (Magnificentiores Selectioresque Urbis Venetiarum Prospectus), 1741. The Metropolitan Museum of Art.