The Giant Wheel, from Carceri d'invenzioni (Imaginary Prisons). Artist: Giovanni Battista Piranesi (Italian, Mogliano Veneto 1720-1778 Rome). Dimensions: Sheet: 25 1/16 x 19 1/2 in. (63.6 x 49.5 cm) Plate: 21 5/8 x 16 1/16 in. (55 x 40.8 cm). Publish