Rome, page 13
Vitruvius was intensely alert not only to the practical aspects of building, but also to its metaphorical content. Thus his disquisitions on the “orders” of architecture and their meanings. Doric, Ionic, Corinthian, Tuscan—each one had its human and divine significance:
The temples of Minerva, Mars, and Hercules will be Doric, since the virile strength of these gods makes daintiness entirely unsuitable to their houses. In temples to Venus, Flora, Proserpine, Spring Water and the Nymphs, the Corinthian order will be found to have special significance, because these are delicate divinities, and so its rather slender outlines, its flowers, leaves, and ornamental volutes will lend propriety where it is due. The construction of temples of the Ionic order to Juno, Diana and Bacchus … will be in keeping with the middle position which they occupy: for such buildings will be an appropriate combination of the severity of the Doric and the delicacy of the Corinthian.
The most prominent of the Augustan “orders” was a new type of capital, known as “Composite,” which combined the acanthus leaves of the Corinthian order with the volutes of the Ionic. This hybrid became one of the typical forms of Augustan architecture, but it required rather more skill to carve successfully than most Roman stonemasons had. Greek marble-cutters had to be imported, because Greece trained better stonemasons than Rome in the first century B.C.E.
These Greek workmen did more than carve architectural details. They did statues, too; someone had to churn out all those effigies of the Princeps and his family. This helps account for the fact that the portraiture of the imperial period tends to lack the realistic, sometimes sharply frank likenesses of earlier Roman portraiture. The carvers had never set eyes on Augustus and so had no firsthand idea of what he “really” looked like, and of course no conception of his personality other than the one diffused by imperial propaganda. But Augustus was a god, and Greek sculptors were well used to depicting gods. This also helps account for a certain sameness in the representations of Augustus throughout his reign and across the Empire.
But more than flood the culture with numberless coins, busts, and statues, the Greeks had a profound and lasting influence on the physical city. Two monuments in Rome itself which clearly showed the continuing Greek influence on Roman art and architecture were the Forum of Augustus, finished around 2 B.C.E., and the Ara Pacis Augustae, dedicated in 9 B.C.E.
In layout, the Forum is entirely Roman, as it should be: a rectangular open space lined with porticoes, in which people met and business was done. One end was closed by a large temple on a high podium, that inheritance from more ancient Etruscan conventions; and there were statues of heroes of the state, including, of course, Augustus himself. But Greek details understandably insinuate themselves. The capitals of its columns are Corinthian; the presence of a line of Caryatids (load-bearing, columnar figures of women) in the upper story of the colonnades is a direct reminiscence of those on the porch of the Erechtheum in Athens.2 The scale of the whole complex was immense. The columns of the temple were some eighteen meters high, made of the gleaming white Luna marble from the quarries of Carrara that was Augustus’ architectural signature. The flooring of the colonnades, by contrast, which survives only as fragments, was done with the most highly colored marbles in the Empire: Phrygian purple (pavonazzetto) from Turkey, Numidian yellow (giallo antico) from Tunisia, red-and-black africano.
The Ara Pacis Augustae, or Altar of Augustan Peace, is an even more direct quotation from Greek norms and forms. Its purpose is to celebrate the end of conflict and dissension—the settling of the Roman state by its great uniter, Augustus, who is seen as presiding over a Rome that has been reborn from the dissent that finished off the Republic. The altar rises on steps, themselves contained within high screen walls of Luna marble with open entrances on the east and the west sides. On either side of each entrance are mythological panels of carved stone. They depict the spiritual and material benefits of Augustus’ reign, and are clearly by Greek artists. One of them, for instance, promises the return of the Golden Age. Here, enthroned at the center of the panel, is Natura naturans, Nature being Nature—Mother Earth in her sweetest and most fertile guise, with two infants sporting in her arms. Fruit and flowers surround her, a cow and a sheep lie contentedly at her feet, and she is flanked by two benign nature spirits, representing Ocean and Water. The mood and content are those of Virgil’s Fourth Eclogue, in which the poet tells of the coming age of Apollo:
Ours is the crowning era foretold in prophecy:
Born of Time, a great new cycle of centuries
Begins. Justice returns to earth, the Golden Age
Returns, and its first-born comes down from heaven above.
Look kindly, chaste Lucina, upon this infant’s birth,
For with him shall hearts of iron cease, and hearts of gold
Inherit the whole earth—yes, Apollo reigns now.
And it’s while you are consul—you, Pollio—that this glorious
Age shall dawn.…
Who is this firstborn child “from heaven above”? It is still a mystery. Christian interpreters after Virgil’s death had no doubt that it was the infant Jesus, but the wish was certainly father to the thought: Virgil was not writing Christian prophecy, although many people have wished he was.
Elsewhere on the carved walls of the Ara Pacis, we see Augustus as Aeneas making sacrifice, in his fundamental guise as the peace bringer, establishing the city of Rome, having at last transcended the dreadful conflict and loss of Troy. The lesson is not to be avoided: there is a savior before us, a savior who repeats the primal act of foundation by establishing the Roman state for the future in accordance with its ancient laws and pieties. What is more, the savior’s family is and always will be the metaphor of the good state. Such is the “Augustan Peace.”
The other Augustan building in Rome that survives, after a fashion, is a parallel to the Ara Pacis—Augustus’ own family mausoleum, whose original form has been so broken down over the ages that, apart from its circular form, it is hardly legible. The Augusteum (in which there remains, of course, not a speck of the dead emperor’s dust) is really more an earthwork than a building—a big shallow cone, eighty-nine meters in diameter and forty-four high, reminiscent of much earlier Etruscan monuments. The first member of Augustus’ family to be interred in it was probably his favorite nephew, Marcellus, poisoned in 23 B.C.E. by Augustus’ third wife, Livia, who wanted her own son Tiberius to inherit the throne. In less ancient times, once the remains of Augustus himself were lost, it acquired many uses, none of them particularly glorious; it was fortified and used as a military base by the Colonnas in the twelfth century, then it was quarried for travertine, and in 1354 the corpse of Cola di Rienzo, mutilated by the daggers of the Roman mob, was cremated in it. Later, it became a huge kitchen garden; later still, when the fashion for things Spanish reached Rome in the nineteenth century, it was turned into a bullring. Not until the 1930s, when Benito Mussolini is said to have contemplated being buried in it, did it regain some of its archaeological dignity—a dignity now hopelessly compromised by the clutter of wastepaper, candy wrappers, empty cigarette packets, and other rubbish left on it by passing Romans.
Augustus’ commitment to building was felt with particular zeal at the edges of empire, where such major architecture was less dense. Some of the greatest structures of the Augustan Age are “provincial” in location—far from Rome, but governed by it—and yet as sophisticated as anything in Rome itself. One of the most beautiful of these Augustan monuments is the Pont du Gard, an aqueduct near Nemausus (modern Nîmes) in Provence, with its rhythm of arches spanning a valley; for those who have seen it, and perhaps even for those who only know it from photographs, this huge and exquisitely proportioned three-level structure is the aqueduct, the archetype of its genre.
Being a major provincial center, the capital of Gallia Narbonensis, Nîmes also has an amphitheater, seating some twenty-five thousand spectators and built around the end of the first century C.E. The Augustan jewel of Nîmes, however, is the temple honoring Augustus’ grandsons, Caius and Lucius Caesar, known as the Maison Carrée or Square House (c. 19 B.C.E.). It is extremely well preserved, probably because it was converted into a Christian basilica in the early Middle Ages. Some of its details, in particular the design of the Corinthian capitals, resemble those of the great Temple of Mars Ultor, dedicated a few years earlier in Rome, and they reflect Augustus’ partiality to the Corinthian order. Likewise, the frieze decoration—continuous acanthus scrolls—mimics that of the Ara Pacis. The Maison Carrée had been enormously admired for centuries when it was first seen by an American, Thomas Jefferson, in 1784. He seized on its design as the ideal prototype of dignified official architecture for the new conception of democratic politics which he had the honor to represent in France: noble and Augustan, yet fine-boned and somehow intimate. Thus the influence of the Maison Carrée crossed the Atlantic, supplying the prototype of the new State House, the capitol of Virginia. It was not a passive copy: Jefferson had to make changes, substituting Ionic capitals for the Corinthian ones, since he feared (no doubt correctly) that local Virginian masons would not be able to carve all those complicated acanthus leaves. But the Virginian capitol, in Richmond, showed, in Jefferson’s own words, that “we wish to exhibit a grandeur of conception, a Republican simplicity, and that true elegance of Proportion, which correspond to a tempered freedom excluding Frivolity, the food of little minds.” How Augustus himself would have approved!
The first century C.E. also saw the decorative arts flourish in the private sphere. Probably the best paintings were imported from Greece, or done in Rome by Greek artists. There was a strong tradition of easel painting throughout the Greek and Roman world, but we know this only from literary sources—the works themselves, victims of time, have not survived except as fleeting glimpses. There is no sign that Roman walls in Augustus’ time had anything comparable in quality or in charged, intricate grandeur to the red-background mural paintings of initiatory scenes in the Villa of the Mysteries in Pompeii, built c. 60 B.C.E.
Little is known of Roman garden design, but it existed, though whatever Augustan gardens there may have been were obliterated long ago by later building. One can infer the character of gardens from what survived in Pompeii—the fishponds and shell grottoes, the paved walks, vine arbors, pergolas, and painted shrubberies. Floor mosaics were popular, whether made of pebbles or of glass tesserae. Middle-class Romans seem to have been excessively fond of kitsch ornamental sculpture, too: the garden of the Pompeiian house of Marcus Lucretius Fronto, if one can judge from photographs, looks like the terrace of Luigi’s Pasta Palace in coastal New Jersey, crammed with sculptures that are more like garden gnomes—a Silenus standing in a nymphaeum and pouring water from a wineskin, birds, satyrs, a generic bearded herm, a Cupid riding a dolphin. Some of this stuff may have been inherited, but most of it was undoubtedly turned out in local factories to the householder’s order.
Yet, in the midst of all this building, what was the single most important monument built by the Romans, still visible in some part today? We think of “monuments” as vertical, rearing up in stately fashion and visible from a distance. “Exegi monumentum aere perennius,” wrote the poet Horace—“I have earned a monument more durable than bronze,”—meaning the fame of his own poetry. But the greatest of the physical monuments, which occupied the best energies of Roman surveyors, planners, engineers, laborers, masons, and slaves for centuries and made possible the growth and administration of the largest empire the world had hitherto known, was neither a mighty building nor a statue but a thing both ponderously physical and entirely horizontal, and thus, at least from a distance, rather hard to see: certainly invisible, and very hard to imagine, as a whole. This was the enormous road system, without which the Roman Empire could not have existed.
Estimates of its size vary a good deal, depending on how many secondary and tertiary roads are figured in. But it was certainly not less than 80,000 kilometers long, and possibly as much as 100,000 or even 120,000 kilometers, including its many bridges thrown over foaming rivers, culverts above swamps, and tunnels hewn through mountainous rock. It was a stupendous feat of surveying, planning, and labor, and all done without earthmoving machines, graders, or explosives—just hand tools and muscle.
You can no more imagine Roman power without its sustaining road network than you can imagine that of America’s empire without radio, TV, telephones, the Internet, and every other sort of electronic communication. It enabled information to pass between distant points faster than ever before in history. To ride across Italy from Rome to Brindisi along the Via Appia took only eight days. The road had its own support system, the ancestor of the garages and rest stops along today’s autostrada—workshops and inns, well-equipped stables, vets for the horses. If your vehicle, whose most common type was known as a carpentum (whence “car”), threw a wheel or broke an axle along the way, you could call for a mechanic or carpentarius (whence “carpenter”) to repair it. If carless, the ordinary pedestrian could walk perhaps twenty kilometers in a day. A marching soldier might do thirty to thirty-five.
In the past, other great imperial powers (the Egyptians, and in Persia the Achaemenids) had road systems, sometimes large and well-maintained ones. But either their use was restricted (in Egypt, all roads were royal and off limits to commoners), or they were poorly integrated with existing ports, making the relations of land and sea transport decidedly iffy. The Roman system worked with a smoothness never achieved before in history, and every civis romanus (Roman citizen) who had anything to move—an army, a wagon train, a roll of papyrus with an important or trivial message, a basket of melons—had access, either personally or through his representatives and clients, to it. From the point of view of trade and strategy, nothing like the roads of Rome had ever before been imagined, let alone built. Without the roads, the strategy could not have existed. The administration of so many subgroups within an empire was extremely time-consuming. Speed of communication and accuracy of placement of force were essential. Imperial cohesion, then as now, depended on communication.
The size of the road network, given the labor required to create it, is astonishing now and was almost inconceivable two millennia ago. It encircled the entire Mediterranean Basin; given enough time, a traveler on horseback or in a wheeled vehicle who started out from Rome and headed east through Ariminum (modern Rimini) and Thessalonica toward Byzantium (not yet named after the Emperor Constantine) and crossed into Asia could follow the same road south through Antioch, Damascus, and Gaza and then have before him, still fully paved and serviced, the long westward coastal run through Alexandria, Cyrene, and Leptis Magna that would eventually finish at Banasa, in what is now Morocco. There, he might find himself staring across the narrow strait that divided Spain from North Africa at another traveler who had taken another Roman road west along the bottom of Europe, through Arelate (modern Arles) and Narbo (modern Narbonne), across the maritime foot of the Pyrenees to Tarraco (modern Tarragona), west from there to Caesaraugusta (modern Saragossa), and thence southward to Hispalis (modern Seville) and Gades (modern Cádiz), which gazed on the North African coast. The Roman geographer Strabo believed that more than thirty-five hundred miles of roads had been completed by the Romans on the Iberian peninsula by 14 C.E., and this total would presently rise to some ten thousand.
To the north, the pattern was much the same. The conquered territories carried the mark of their subjugation in the form of Roman roads. One such road linked Mediolanum (modern Milan) to Augusta Vindelicorum (modern Augsburg), and so along the valley of the Rhine to Mogantiacum (modern Mainz) and Colonia Agrippina (modern Cologne). France was webbed with paved routes, from Lugdunum (modern Lyons) to Rotomagus (modern Rouen). And of course the network spread across the Channel to Britannia, thrusting north to link up with Hadrian’s Wall, which had been built to frustrate the hostile Scots in 122–125 C.E.
Their construction hardly varied, and it depended entirely on exactingly supervised slave and military labor. First a large trench was dug, six or seven meters wide and perhaps eighty centimeters deep. Both sides of it were lined with gomphi or curbstones, and then the roadbed was filled with layers of sand, gravel, and small rocks, well pounded in. The final surface was provided by flat slabs of stone, keyed together. The road builders took care to give the surface a camber, so that water would run off to the sides.
Not all Roman roads were like this. Many were cambered, edged, but unpaved. Some, like the great military road that linked Carthage to Theveste in North Africa, were paved and assiduously maintained. These included the Via Appia between Rome and Capua, and the Via Egnatia across the Balkan Peninsula from the Adriatic to the Aegean—which would be extended to Constantinople. But many roads disintegrated over time, from the stress of wheeled traffic, and would hardly be traceable today but for their surviving milestones, squat cylindrical columns which indicated the traveler’s distance from the nearest major city. (The “Roman mile” was about 10 percent shorter than modern ones at 1,620 yards.) Nevertheless, the Roman road system was by far the most elaborate and far-reaching that human ingenuity would produce until the nineteenth century in Europe. Naturally, it long outlasted Augustus’ own lifetime and was one of the most valuable parts of the enormous legacy that he left to his successors.
Augustus ruled Rome for almost forty-four years, dying a month before his seventy-seventh birthday. He had what he had asked the gods to send him: a quick and painless death. Though there were rumors that he had died of eating some poison-smeared figs brought to him by his wife, Livia, this was only gossip. The transition of power went smoothly: Livia’s elder son by him, Tiberius, was Augustus’ main heir and received the imperium. No one expected that anyone could measure up to the immense achievements of the Princeps; and, of course, neither Tiberius nor anyone else did so. Dying, according to Suetonius, “finally he kissed his wife with ‘Goodbye, Livia; never forget whose wife you have been.’ ” It cannot have been a much-needed injunction.
The temples of Minerva, Mars, and Hercules will be Doric, since the virile strength of these gods makes daintiness entirely unsuitable to their houses. In temples to Venus, Flora, Proserpine, Spring Water and the Nymphs, the Corinthian order will be found to have special significance, because these are delicate divinities, and so its rather slender outlines, its flowers, leaves, and ornamental volutes will lend propriety where it is due. The construction of temples of the Ionic order to Juno, Diana and Bacchus … will be in keeping with the middle position which they occupy: for such buildings will be an appropriate combination of the severity of the Doric and the delicacy of the Corinthian.
The most prominent of the Augustan “orders” was a new type of capital, known as “Composite,” which combined the acanthus leaves of the Corinthian order with the volutes of the Ionic. This hybrid became one of the typical forms of Augustan architecture, but it required rather more skill to carve successfully than most Roman stonemasons had. Greek marble-cutters had to be imported, because Greece trained better stonemasons than Rome in the first century B.C.E.
These Greek workmen did more than carve architectural details. They did statues, too; someone had to churn out all those effigies of the Princeps and his family. This helps account for the fact that the portraiture of the imperial period tends to lack the realistic, sometimes sharply frank likenesses of earlier Roman portraiture. The carvers had never set eyes on Augustus and so had no firsthand idea of what he “really” looked like, and of course no conception of his personality other than the one diffused by imperial propaganda. But Augustus was a god, and Greek sculptors were well used to depicting gods. This also helps account for a certain sameness in the representations of Augustus throughout his reign and across the Empire.
But more than flood the culture with numberless coins, busts, and statues, the Greeks had a profound and lasting influence on the physical city. Two monuments in Rome itself which clearly showed the continuing Greek influence on Roman art and architecture were the Forum of Augustus, finished around 2 B.C.E., and the Ara Pacis Augustae, dedicated in 9 B.C.E.
In layout, the Forum is entirely Roman, as it should be: a rectangular open space lined with porticoes, in which people met and business was done. One end was closed by a large temple on a high podium, that inheritance from more ancient Etruscan conventions; and there were statues of heroes of the state, including, of course, Augustus himself. But Greek details understandably insinuate themselves. The capitals of its columns are Corinthian; the presence of a line of Caryatids (load-bearing, columnar figures of women) in the upper story of the colonnades is a direct reminiscence of those on the porch of the Erechtheum in Athens.2 The scale of the whole complex was immense. The columns of the temple were some eighteen meters high, made of the gleaming white Luna marble from the quarries of Carrara that was Augustus’ architectural signature. The flooring of the colonnades, by contrast, which survives only as fragments, was done with the most highly colored marbles in the Empire: Phrygian purple (pavonazzetto) from Turkey, Numidian yellow (giallo antico) from Tunisia, red-and-black africano.
The Ara Pacis Augustae, or Altar of Augustan Peace, is an even more direct quotation from Greek norms and forms. Its purpose is to celebrate the end of conflict and dissension—the settling of the Roman state by its great uniter, Augustus, who is seen as presiding over a Rome that has been reborn from the dissent that finished off the Republic. The altar rises on steps, themselves contained within high screen walls of Luna marble with open entrances on the east and the west sides. On either side of each entrance are mythological panels of carved stone. They depict the spiritual and material benefits of Augustus’ reign, and are clearly by Greek artists. One of them, for instance, promises the return of the Golden Age. Here, enthroned at the center of the panel, is Natura naturans, Nature being Nature—Mother Earth in her sweetest and most fertile guise, with two infants sporting in her arms. Fruit and flowers surround her, a cow and a sheep lie contentedly at her feet, and she is flanked by two benign nature spirits, representing Ocean and Water. The mood and content are those of Virgil’s Fourth Eclogue, in which the poet tells of the coming age of Apollo:
Ours is the crowning era foretold in prophecy:
Born of Time, a great new cycle of centuries
Begins. Justice returns to earth, the Golden Age
Returns, and its first-born comes down from heaven above.
Look kindly, chaste Lucina, upon this infant’s birth,
For with him shall hearts of iron cease, and hearts of gold
Inherit the whole earth—yes, Apollo reigns now.
And it’s while you are consul—you, Pollio—that this glorious
Age shall dawn.…
Who is this firstborn child “from heaven above”? It is still a mystery. Christian interpreters after Virgil’s death had no doubt that it was the infant Jesus, but the wish was certainly father to the thought: Virgil was not writing Christian prophecy, although many people have wished he was.
Elsewhere on the carved walls of the Ara Pacis, we see Augustus as Aeneas making sacrifice, in his fundamental guise as the peace bringer, establishing the city of Rome, having at last transcended the dreadful conflict and loss of Troy. The lesson is not to be avoided: there is a savior before us, a savior who repeats the primal act of foundation by establishing the Roman state for the future in accordance with its ancient laws and pieties. What is more, the savior’s family is and always will be the metaphor of the good state. Such is the “Augustan Peace.”
The other Augustan building in Rome that survives, after a fashion, is a parallel to the Ara Pacis—Augustus’ own family mausoleum, whose original form has been so broken down over the ages that, apart from its circular form, it is hardly legible. The Augusteum (in which there remains, of course, not a speck of the dead emperor’s dust) is really more an earthwork than a building—a big shallow cone, eighty-nine meters in diameter and forty-four high, reminiscent of much earlier Etruscan monuments. The first member of Augustus’ family to be interred in it was probably his favorite nephew, Marcellus, poisoned in 23 B.C.E. by Augustus’ third wife, Livia, who wanted her own son Tiberius to inherit the throne. In less ancient times, once the remains of Augustus himself were lost, it acquired many uses, none of them particularly glorious; it was fortified and used as a military base by the Colonnas in the twelfth century, then it was quarried for travertine, and in 1354 the corpse of Cola di Rienzo, mutilated by the daggers of the Roman mob, was cremated in it. Later, it became a huge kitchen garden; later still, when the fashion for things Spanish reached Rome in the nineteenth century, it was turned into a bullring. Not until the 1930s, when Benito Mussolini is said to have contemplated being buried in it, did it regain some of its archaeological dignity—a dignity now hopelessly compromised by the clutter of wastepaper, candy wrappers, empty cigarette packets, and other rubbish left on it by passing Romans.
Augustus’ commitment to building was felt with particular zeal at the edges of empire, where such major architecture was less dense. Some of the greatest structures of the Augustan Age are “provincial” in location—far from Rome, but governed by it—and yet as sophisticated as anything in Rome itself. One of the most beautiful of these Augustan monuments is the Pont du Gard, an aqueduct near Nemausus (modern Nîmes) in Provence, with its rhythm of arches spanning a valley; for those who have seen it, and perhaps even for those who only know it from photographs, this huge and exquisitely proportioned three-level structure is the aqueduct, the archetype of its genre.
Being a major provincial center, the capital of Gallia Narbonensis, Nîmes also has an amphitheater, seating some twenty-five thousand spectators and built around the end of the first century C.E. The Augustan jewel of Nîmes, however, is the temple honoring Augustus’ grandsons, Caius and Lucius Caesar, known as the Maison Carrée or Square House (c. 19 B.C.E.). It is extremely well preserved, probably because it was converted into a Christian basilica in the early Middle Ages. Some of its details, in particular the design of the Corinthian capitals, resemble those of the great Temple of Mars Ultor, dedicated a few years earlier in Rome, and they reflect Augustus’ partiality to the Corinthian order. Likewise, the frieze decoration—continuous acanthus scrolls—mimics that of the Ara Pacis. The Maison Carrée had been enormously admired for centuries when it was first seen by an American, Thomas Jefferson, in 1784. He seized on its design as the ideal prototype of dignified official architecture for the new conception of democratic politics which he had the honor to represent in France: noble and Augustan, yet fine-boned and somehow intimate. Thus the influence of the Maison Carrée crossed the Atlantic, supplying the prototype of the new State House, the capitol of Virginia. It was not a passive copy: Jefferson had to make changes, substituting Ionic capitals for the Corinthian ones, since he feared (no doubt correctly) that local Virginian masons would not be able to carve all those complicated acanthus leaves. But the Virginian capitol, in Richmond, showed, in Jefferson’s own words, that “we wish to exhibit a grandeur of conception, a Republican simplicity, and that true elegance of Proportion, which correspond to a tempered freedom excluding Frivolity, the food of little minds.” How Augustus himself would have approved!
The first century C.E. also saw the decorative arts flourish in the private sphere. Probably the best paintings were imported from Greece, or done in Rome by Greek artists. There was a strong tradition of easel painting throughout the Greek and Roman world, but we know this only from literary sources—the works themselves, victims of time, have not survived except as fleeting glimpses. There is no sign that Roman walls in Augustus’ time had anything comparable in quality or in charged, intricate grandeur to the red-background mural paintings of initiatory scenes in the Villa of the Mysteries in Pompeii, built c. 60 B.C.E.
Little is known of Roman garden design, but it existed, though whatever Augustan gardens there may have been were obliterated long ago by later building. One can infer the character of gardens from what survived in Pompeii—the fishponds and shell grottoes, the paved walks, vine arbors, pergolas, and painted shrubberies. Floor mosaics were popular, whether made of pebbles or of glass tesserae. Middle-class Romans seem to have been excessively fond of kitsch ornamental sculpture, too: the garden of the Pompeiian house of Marcus Lucretius Fronto, if one can judge from photographs, looks like the terrace of Luigi’s Pasta Palace in coastal New Jersey, crammed with sculptures that are more like garden gnomes—a Silenus standing in a nymphaeum and pouring water from a wineskin, birds, satyrs, a generic bearded herm, a Cupid riding a dolphin. Some of this stuff may have been inherited, but most of it was undoubtedly turned out in local factories to the householder’s order.
Yet, in the midst of all this building, what was the single most important monument built by the Romans, still visible in some part today? We think of “monuments” as vertical, rearing up in stately fashion and visible from a distance. “Exegi monumentum aere perennius,” wrote the poet Horace—“I have earned a monument more durable than bronze,”—meaning the fame of his own poetry. But the greatest of the physical monuments, which occupied the best energies of Roman surveyors, planners, engineers, laborers, masons, and slaves for centuries and made possible the growth and administration of the largest empire the world had hitherto known, was neither a mighty building nor a statue but a thing both ponderously physical and entirely horizontal, and thus, at least from a distance, rather hard to see: certainly invisible, and very hard to imagine, as a whole. This was the enormous road system, without which the Roman Empire could not have existed.
Estimates of its size vary a good deal, depending on how many secondary and tertiary roads are figured in. But it was certainly not less than 80,000 kilometers long, and possibly as much as 100,000 or even 120,000 kilometers, including its many bridges thrown over foaming rivers, culverts above swamps, and tunnels hewn through mountainous rock. It was a stupendous feat of surveying, planning, and labor, and all done without earthmoving machines, graders, or explosives—just hand tools and muscle.
You can no more imagine Roman power without its sustaining road network than you can imagine that of America’s empire without radio, TV, telephones, the Internet, and every other sort of electronic communication. It enabled information to pass between distant points faster than ever before in history. To ride across Italy from Rome to Brindisi along the Via Appia took only eight days. The road had its own support system, the ancestor of the garages and rest stops along today’s autostrada—workshops and inns, well-equipped stables, vets for the horses. If your vehicle, whose most common type was known as a carpentum (whence “car”), threw a wheel or broke an axle along the way, you could call for a mechanic or carpentarius (whence “carpenter”) to repair it. If carless, the ordinary pedestrian could walk perhaps twenty kilometers in a day. A marching soldier might do thirty to thirty-five.
In the past, other great imperial powers (the Egyptians, and in Persia the Achaemenids) had road systems, sometimes large and well-maintained ones. But either their use was restricted (in Egypt, all roads were royal and off limits to commoners), or they were poorly integrated with existing ports, making the relations of land and sea transport decidedly iffy. The Roman system worked with a smoothness never achieved before in history, and every civis romanus (Roman citizen) who had anything to move—an army, a wagon train, a roll of papyrus with an important or trivial message, a basket of melons—had access, either personally or through his representatives and clients, to it. From the point of view of trade and strategy, nothing like the roads of Rome had ever before been imagined, let alone built. Without the roads, the strategy could not have existed. The administration of so many subgroups within an empire was extremely time-consuming. Speed of communication and accuracy of placement of force were essential. Imperial cohesion, then as now, depended on communication.
The size of the road network, given the labor required to create it, is astonishing now and was almost inconceivable two millennia ago. It encircled the entire Mediterranean Basin; given enough time, a traveler on horseback or in a wheeled vehicle who started out from Rome and headed east through Ariminum (modern Rimini) and Thessalonica toward Byzantium (not yet named after the Emperor Constantine) and crossed into Asia could follow the same road south through Antioch, Damascus, and Gaza and then have before him, still fully paved and serviced, the long westward coastal run through Alexandria, Cyrene, and Leptis Magna that would eventually finish at Banasa, in what is now Morocco. There, he might find himself staring across the narrow strait that divided Spain from North Africa at another traveler who had taken another Roman road west along the bottom of Europe, through Arelate (modern Arles) and Narbo (modern Narbonne), across the maritime foot of the Pyrenees to Tarraco (modern Tarragona), west from there to Caesaraugusta (modern Saragossa), and thence southward to Hispalis (modern Seville) and Gades (modern Cádiz), which gazed on the North African coast. The Roman geographer Strabo believed that more than thirty-five hundred miles of roads had been completed by the Romans on the Iberian peninsula by 14 C.E., and this total would presently rise to some ten thousand.
To the north, the pattern was much the same. The conquered territories carried the mark of their subjugation in the form of Roman roads. One such road linked Mediolanum (modern Milan) to Augusta Vindelicorum (modern Augsburg), and so along the valley of the Rhine to Mogantiacum (modern Mainz) and Colonia Agrippina (modern Cologne). France was webbed with paved routes, from Lugdunum (modern Lyons) to Rotomagus (modern Rouen). And of course the network spread across the Channel to Britannia, thrusting north to link up with Hadrian’s Wall, which had been built to frustrate the hostile Scots in 122–125 C.E.
Their construction hardly varied, and it depended entirely on exactingly supervised slave and military labor. First a large trench was dug, six or seven meters wide and perhaps eighty centimeters deep. Both sides of it were lined with gomphi or curbstones, and then the roadbed was filled with layers of sand, gravel, and small rocks, well pounded in. The final surface was provided by flat slabs of stone, keyed together. The road builders took care to give the surface a camber, so that water would run off to the sides.
Not all Roman roads were like this. Many were cambered, edged, but unpaved. Some, like the great military road that linked Carthage to Theveste in North Africa, were paved and assiduously maintained. These included the Via Appia between Rome and Capua, and the Via Egnatia across the Balkan Peninsula from the Adriatic to the Aegean—which would be extended to Constantinople. But many roads disintegrated over time, from the stress of wheeled traffic, and would hardly be traceable today but for their surviving milestones, squat cylindrical columns which indicated the traveler’s distance from the nearest major city. (The “Roman mile” was about 10 percent shorter than modern ones at 1,620 yards.) Nevertheless, the Roman road system was by far the most elaborate and far-reaching that human ingenuity would produce until the nineteenth century in Europe. Naturally, it long outlasted Augustus’ own lifetime and was one of the most valuable parts of the enormous legacy that he left to his successors.
Augustus ruled Rome for almost forty-four years, dying a month before his seventy-seventh birthday. He had what he had asked the gods to send him: a quick and painless death. Though there were rumors that he had died of eating some poison-smeared figs brought to him by his wife, Livia, this was only gossip. The transition of power went smoothly: Livia’s elder son by him, Tiberius, was Augustus’ main heir and received the imperium. No one expected that anyone could measure up to the immense achievements of the Princeps; and, of course, neither Tiberius nor anyone else did so. Dying, according to Suetonius, “finally he kissed his wife with ‘Goodbye, Livia; never forget whose wife you have been.’ ” It cannot have been a much-needed injunction.
