The Roman antiquities, t. 4, Plate XXVIII. External façade of the advancement of circular arches of the Theatre of Marcellus. 

This engraving by Giovanni Battista Piranesi, a leading architect and printmaker of the 18th century, depicts the external façade of the Theatre of Marcellus in Rome. The drawing highlights the architectural grandeur of the Roman theatre, showcasing the intricate details of its circular arches and the tiered seating arrangement. This plate, from Piranesi's influential series "Roman Antiquities", exemplifies his meticulous approach to documenting ancient Roman architecture, a pursuit that made him a renowned master of architectural perspective and a key figure in the Neoclassical movement.