Forum Boarium

Listen first. Cars sweep along the riverside road, scooters buzz past, and somewhere a tour guide calls out over the noise. Under all that, the ground here sits low, close to the level of the Tiber. You are standing in one of the oldest public spaces in Rome. Two small temples rise from a patch of lawn, and their pale stone holds the light differently from the brick and asphalt around them. This is the Forum Boarium, the ancient cattle market.

The name says it plainly. In Latin, "bos" means ox, and "boarium" refers to cattle. Long before emperors and marble palaces, this flat ground by the river was where herders brought their animals to trade. The location made sense. The Tiber was close, there was a natural crossing point nearby, and the hills of early Rome rose just behind. Goods, animals, and people all met here. In a real sense, the city grew outward from a riverside marketplace like this one.

The river shaped everything. Just beyond the trees, the Tiber bends, and in ancient times a busy river harbour worked along this bank. Boats unloaded grain, salt, oil, and wine. If you look toward the water, you may see a single broken arch standing alone in the current. Romans today call it the Ponte Rotto, which means the broken bridge. It is what remains of the Pons Aemilius, one of the earliest stone bridges in the city. Floods damaged it again and again over the centuries.

Now turn to the round temple. It is a ring of slender columns around a circular inner chamber, and twenty Corinthian columns, with their leafy capitals, circle the building. For centuries people called it the Temple of Vesta, because its shape resembles the famous round shrine in the Roman Forum. That name was a mistake. Most scholars now identify it as a temple of Hercules, probably Hercules Victor, the victorious hero. Many guidebooks still carry the old name, so you may hear both.

Here is the first surprise. This modest round building is generally considered the oldest surviving marble building in Rome. It dates to the late second century before Christ. Much of its marble came from Greece, from quarries near Athens. At that time, Rome built mostly in local volcanic stone and brick. Marble was an expensive, foreign luxury. So this temple shows a moment when Greek taste and Greek craftsmen were starting to change how Romans built. The conical tiled roof you see today is a much later addition.

The second temple stands a few steps away. It is rectangular, raised on a high platform, with a deep porch of columns at the front. These are Ionic columns, with curled scroll shapes at the top. This was the Temple of Portunus, the god of harbours and gates. That makes perfect sense beside a river port. The builders used tufa, a soft volcanic stone, together with harder travertine. Then they covered the surfaces with stucco to imitate the look of marble.

Why did these two temples survive when so much of ancient Rome disappeared? The answer is simple. Both were turned into churches during the Middle Ages. The rectangular temple became a church dedicated to Saint Mary of Egypt. The round one also served as a Christian church for centuries. A building that people keep using is a building that people keep repairing. Countless other temples were stripped for their stone, but these two stayed in daily use.

This ground also holds darker memories. The Roman historian Livy wrote that Rome's first gladiatorial combat took place here, in 264 BC. It was part of a funeral for a nobleman, and three pairs of fighters took part. Livy also recorded something harder to hear. After the terrible defeat at Cannae, during the war against Hannibal, Romans buried people alive in this market as a desperate religious act. A peaceful lawn today. Not always a peaceful place.

Hercules belongs to this spot through legend as well. According to the old Roman tale, Hercules rested here with a herd of cattle. A fire-breathing monster named Cacus stole some of the animals and hid them in a cave. Hercules found them, killed Cacus, and the locals honoured him with a great altar. That altar, the Ara Maxima, stood somewhere in this area. It is a myth, of course. But it shows how firmly Romans linked this cattle market to the hero.

Now look across the square at the church with the tall brick bell tower. This is Santa Maria in Cosmedin. Under its porch hangs a large round marble face with an open mouth — the Bocca della Verità, the Mouth of Truth. Legend says that if a liar puts a hand inside, the mouth will bite it off. The real story is more ordinary. The disc was probably an ancient drain cover or a fountain decoration, showing the face of a river or sea god.

The mouth became famous around the world through cinema. In the 1953 film Roman Holiday, Gregory Peck pretends that the stone has bitten his hand, and Audrey Hepburn screams. That scene still draws long queues to the porch. Inside the church, the mood changes completely. The interior is calm, dim, and simple, with old columns reused from earlier buildings. Few visitors who wait for the photo take time to step inside, and that is a real loss.

A short walk from here stands a massive four-sided arch, built from heavy marble blocks. This is the Arch of Janus, from the fourth century after Christ. It probably gave shelter to merchants and travellers at a busy crossroads. Beside the nearby church of San Giorgio in Velabro, look for a smaller, richly carved gateway. Bankers and cattle traders paid for it to honour the emperor Septimius Severus. Look closely and you can see a blank space where one figure was cut away.

That blank space is the second surprise. The figure was Geta, one of the emperor's sons. After their father died, his brother Caracalla had Geta murdered. Then Caracalla ordered that Geta's image and name be removed across the empire. The stonecutters did their work here too. So a monument built to celebrate a family now shows the violence inside that family. A missing face in the stone carries a political story almost eighteen centuries old.

Stand still for one more moment. Behind you is the river that first brought traders here. In front of you are two temples that survived because people never stopped using them. The traffic will keep moving, and the queue at the Mouth of Truth will keep growing. But as you walk away, look down at how low this ground sits beside the hills. Rome began down here, by the water — with cattle, boats, and a market.