Encyclopedia Ichnographica

Sep. Honorij Imp.

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Sep. Honorij Imp.


Saint Peter's Basilica
1998.08.08

The Basilican Church of Saint Peter, erected by the emperor Constantine c.330, was pulled down to make way for the present cathedral.



The Basilican Church of Saint Peter was erected by the emperor Constantine c.330 over the tomb of Saint Peter, which was also near Saint Peter's site of martyrdom in the Circus of Caligula and Nero. It is one of the largest imperial buildings constructed in Rome during the late years of the Empire. As such, its plan should be represented within the Ichnographia Campus Martius, however, it is not. Instead Piranesi fills the Vatican Valley with the elaborate Garden of Nero whose placement here is archeologically correct, although Piranesi's plan of the garden is entirely his own. Hence, it is easy to surmise that Piranesi simply chose to "reconstruct" this portion of ancient Rome according to its first century condition, and such a theory is plausible except that Piranesi also chose to include the Tomb of Honorius within the Garden of Nero, a sizable structure that was actually attached to Saint Peter's Basilica. The omission of Christianity's foremost shrine from the large plan therefore heralds ambiguity.

St. Peter's was founded by Constantine primarily as a covered cemetery and funerary hall, serving mainly for burials, commemorative banquets, and the veneration of a martyr, the Apostle Saint Peter. Its floor was covered with graves; funerary banquets were customary--Saint Augustine tells of them as late as about A.D. 400; mausolea crowded around its walls, one--S. Maria della Febbre--older than the church and surviving until the eighteenth century. St. Peter's was on an imperial estate out of town: on the shoulder of the Vatican Hill where it sloped down toward the Gardens of Nero. [The basilica] was placed on a large terrace created by filling in the pagan necropolis and the small Christian cult center therein; only the upper part of the niche, Saint Peter's memorial, remained above the floor level.
Richard Krautheimer, Rome: Profile of a City, 312-1308 (Princeton: Princton University Press, 1980), pp. 26-7.

A detail area of the Horti Neroniani with the Circus of Caligula and Nero (left) and the Porticus Neronianae (right) is superimposed with the coinciding portion of Nolli Plan of Rome.


Finding the location within the Ichnographia of where the Basilica of Saint Peter's should be, begins to disclose Piranesi's intent. For example, in actuality the altar of St. Peter's Basilica sits directly above Saint Peter's tomb, which is part of row of tombs, and a superimposition of the basilica's plan and the Ichnographia plainly indicates that Piranesi places a row sepulchers precisely where they ought to be. Furthermore, the basilican plan of the Porticus Neronianae is certainly a reference to the Basilica of Saint Peter's, albeit inverted. It is as if Piranesi located St. Peter's Basilica within the Ichnographia without actually delineating it. This illusory mode of operation, moreover, infuses double meaning into the buildings of the Horti Neroniani that Piranesi does draw. It therefore becomes evident that Piranesi's rendition of the Porticus Neronianae is an imaginative reminder that not only did Saint Peter suffer and die under Nero's persecution of the Christians, but that in the end it is Saint Peter, through Christ, that ultimately triumphs. There is thus no doubt that Piranesi clearly recognized the tremendous irony whereby the most hedonistic of imperial Roman gardens ultimately became Christianity's terrestrial and spiritual center.


Sarcophagus of the Empress Maria

The last imperial artifact of ancient Rome
2001.03.04

Burial of the sarcophagus containing the remains of Maria, the first wife of the Emperor Honorius, occurred circa 400 AD within the Mausoleum of Honorius, a structure then newly attached to the south transept of the original Basilica of Saint Peter.




Basilica of St. Peter's is absent...
2001.03.06




Maria, wife of the emperor Honorius...
2002.02.21

Maria, wife of the emperor Honorius, appears a second time within Piranesi's Il Campo Marzio in the "Ichnographia Campi Martii", the large fold-out plan where Piranesi reenacts ancient Rome's Campo Marzio and its environs, although in this instance, it is the sepulcher of Maria that is delineated rather than her sarcophagus.



The sepulcher of Maria sits in front of the Templum Apollinis, and together these structures are within a court enclosed by rows of unnamed sepulchers and adjacent to the Circus of Caligula and Nero. This ensemble is part of the greater Garden of Nero, which is, and indeed was, situated within Rome's Vatican valley. It should be noted, however, that Piranesi separates the sepulcher of Maria from the sepulcher of the Emperor Honorius, the location where Maria's sarcophagus actually did lie. Moreover, neither the sepulcher of Maria nor that of Honorius are placed next to the Basilica of St. Peter's, which is altogether absent from the Ichnographia.



Essentially, Piranesi positions two of imperial Rome's Christian remains within an otherwise completely Pagan milieu, thus marking, albeit covertly, precisely where ancient Rome's inversion from Paganism to Christianity most resolutely occurred. Remember, St. Peter was martyred in the Circus of Caligula and Nero and the altar of St. Peter's Basilica marks St. Peter's tomb.



24 December
2013.12.24 19:05

There are many instances where buildings delineated within the Ichnographia Campus Martius are presented together yet actually never existed at the same time. For example, the Amphitheatrum Statilii Tauri burned in the great fire of 64 A.D., and the Columna apotheoseos Antonini Pii (depicted just right of the amphitheater) was erected in 162, and the Columna Cochlidos (depicted left and just behind the amphitheater) was erected in 192.

Similarly, the T[emplum] Pietatis and the Theatrum Marcelli are delineated together within the Ichnographia, yet the temple of Pietas was destroyed by Augustus in order to make room for the theater of Marcellus.


Of more interest, however, is that Piranesi also omitted buildings that should have been delineated within the Ichnographia. While the Sepulchrum Honorij Imp., the mausoleum built by the emperor Honorius circa 400, is within the Ichnographia, the building that the mausoleum was in actuality attached to, the basilica of St. Peter built by the emperor Constantine circa 330, is not delineated within the Ichnographia.



To: James Adam
From: Robert Adam
Date: 13 September 1755
[I] got [Piranesi] to finish the whole of Rome and to publish it alone without joining it in a book whose principal dedication was to my Lord Charlemont, which made mine less regarded, whereas mine being sold separate all the world will purchase it and have no other name to detract from the honour of the intention.


Within the first volume of Le Antichità Romane are a series of plans of ancient Rome: baths of Titus, topographical map, barracks of Tiberius, baths of Caracalla, nymphaeum of Nero, baths of Diocletian, Forum Romanum, Capitoline Hill. When combined with the Ichnographia Campus Martius these plans constitute an almost complete plan of ancient Rome.



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