CC0 · no rights reserved
Prisoners on a Projecting Platform, plate 10 from Imaginary Prisons
From the collection of Art Institute of Chicago. Free to download, adapt and use — no permission needed.
Credit linePrisoners on a Projecting Platform, plate 10 from Imaginary Prisons. 1750–60. Giovanni Battista Piranesi, Italian, 1720-1778. The Art Institute of Chicago, Clarence Buckingham Collection. CC0.