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

Etching, engraving, scratching, sulphur tint or open bite, drypoint; first state of seven (Robison)The Metropolitan Museum of Art · CC0 1.0Lindy Arts

The Arch with a Shell Ornament, from "Carceri d'invenzione" (Imaginary Prisons)

Etching, engraving, scratching, sulphur tint or open bite, drypoint; first state of seven (Robison)