Title: Prisoners on a Projecting Platform, from "Carceri d'invenzione" (Imaginary Prisons)
Object type: Print
Date: ca. 1749–50
Portfolio: Carceri d'invenzione
Artist:  Giovanni Battista Piranesi 
Artist bio: Italian, Mogliano Veneto 1720–1778 Rome
Artist nationality: Italian
Artist role: Artist
Medium: Etching, engraving, sulphur tint or open bite, burnishing; first state of four (Robison)
Dimensions: Sheet: 19 1/2 x 25 3/16 in. (49.5 x 64 cm)
Plate: 16 1/8 x 21 1/4 in. (41 x 54 cm)
Classification: Prints
Credit line: Harris Brisbane Dick Fund, 1937
Department: Drawings and Prints
Repository: Metropolitan Museum of Art, New York, NY
Tags: term: Human Figures, term: Prisoners