License, verbatimPD
The National Gallery of Art: open access image with no usage restrictions under the NGA's open access policy (openaccess=1 in the Gallery's published_images dataset).
Giovanni Battista Brustolon after Canaletto. The Doge in the Bucintoro Departing for the Porto di Lido on Ascension Day, 1763/1766. National Gallery of Art, Washington.