PIRANESI'S CIRCUSES AND <i>CARCERES</i> : THE NEWLY DISCOVERED FIRST STATE OF THE <i>CAMPUS MARTIUS</i> PLAN AND ITS ANTIQUARIAN CONTEXT

This essay takes as its starting point the newly discovered first state print of the large topographical plan of the Campus Martius of ancient Rome made by Giovanni Battista Piranesi in the years around 1760. There are significant differences between the first and the more common second state (which was bound into the Campus Martius volume published in 1762) and they concern the form of the circuses, six of which are included by Piranesi in his plan. This essay will investigate those changes and propose a hypothesis regarding the motivations for them by looking at the antiquarian context with which Piranesi was familiar and taking into consideration his enthusiasm for on-site examination of ancient remains. Particularly relevant are the ruins of the circus of Maxentius on the via Appia just outside the city, a site which preoccupied Piranesi at various times throughout his career in Rome. The antiquarian material examined includes earlier writings on circuses, which had a marked effect on the way that Piranesi drew his circuses in the first state of the plan and on the changes he made, clearly visible in the copper plates from which the prints were made. The circus Maximus and circus of Maxentius as described by Pirro Ligorio, Onofrio Panvinio and Raffaele Fabretti are key to the genesis and development of the Campus plan.