The Arch with a Shell Ornament, from Carceri d'invenzione (Imaginary Prisons), Giovanni Battista Piranesi, circa 1749–50

Print. Date: circa 1749–50. Dimensions: Sheet: 19 1/2 x 25 3/16 in. (49.5 x 64 cm); ; Plate: 15 15/16 x 21 7/16 in. (40.5 x 54.5 cm). Medium: drypoint, engraving, etching, pen. Collection: Metropolitan Museum of Art. The Arch with a Shell Ornament, from Carceri d'invenzione (Imaginary Prisons) MET DP828194