This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Giovanni Battista Piranesi The Drawbridge plate VII from the series Carceri d'Invenzione Google Art Project. special urlid BgEXHTLHxSHw PDold Collections of the Cooper Hewitt Smithsonian Design Museum Le Carceri d'Invenzione Google Art Project works by Giovanni Battista Piranesi Google Art Project works in CooperHewitt Smithsonian