Aventicum

Listen for a moment. Wind moves through the grass of a wide Swiss field. A tractor hums somewhere beyond a hedge. Under your feet, the ground feels soft and ordinary. But this quiet farmland, just a short drive south of Murten, sits on top of a city. For several centuries, Roman streets, baths, temples and workshops spread across these slopes. Today, most of that city is still underground, and the cows graze above it.

This is Aventicum, the Roman town whose ruins lie in and around the modern village of Avenches. Before the Romans, this was the land of the Helvetii, a Celtic people of the Swiss plateau. When Rome brought the region under its control, Aventicum became the main town of the Helvetii. It was their capital, their market and their political centre. Many visitors come from Murten for the medieval walls, and they miss this older city just beyond the lake shore.

The town's great moment came in the first century, under the emperor Vespasian. Around the year 71, Aventicum was raised to the rank of a Roman colony. That was a serious honour. It brought prestige, privileges and a long official name that celebrated the emperor's family. There is a small personal story here too. The Roman writer Suetonius tells us that Vespasian's father worked as a moneylender among the Helvetii. So the emperor may have known this region through his own family.

With colony status came ambition. The town built a long defensive wall that ran for several kilometres around the settlement. Here is the first surprise. The wall enclosed far more land than the town ever filled. Large parts inside it stayed open fields and gardens. Historians often read this wall as a statement of pride, not only of defence. It told every traveller on the road that this was an important Roman city.

You can still see one section of that ambition clearly. On the slope above the town stands the Tornallaz tower, a round tower from the old wall. It was restored in modern times, so its upper parts are a reconstruction. Still, it gives you a real sense of scale. Stand near it and follow the line of the wall with your eyes. Imagine stone running across the hills, broken by towers, with the town gathered inside.

Now turn toward the most famous single ruin here. In the fields stands one tall column, alone against the sky. Locals call it the Cigognier, which means the stork's nest. For a long time, storks built their nest on top of it, and the name stayed. The column is the last standing piece of a large sanctuary. Archaeologists think this temple complex was connected with the worship of the emperor, a common practice in Roman towns.

And here is the second surprise. In 1939, excavators working near the Cigognier found a bust of the emperor Marcus Aurelius made of gold. It was lying in a drain. Nobody knows for certain how it got there. Perhaps someone hid it during a time of danger, and never came back for it. The original is kept in the cantonal archaeology museum in Lausanne. In Avenches, you can see a faithful copy of this rare object.

Just next to the old town of Avenches lies the amphitheatre. This oval arena once held thousands of spectators. They watched animal hunts and gladiator fights, the standard entertainment of the Roman world. The stone seating curves around the sandy floor. Walk to the edge and look down. The shape still works exactly as it was designed. Every seat looks toward the centre, and sound carries well across the open space.

Above the arena entrance stands a square medieval tower. It was built many centuries after the Romans left, partly from older material. Today this tower holds the Roman Museum of Avenches. Inside, you can see objects found here over generations of digging. Look for pottery, coins, tools, carved stones and inscriptions. These small things show daily life in a provincial Roman town. They show the people who cooked, traded, prayed and argued here.

The amphitheatre is not only a ruin. In summer, it becomes a stage again. Avenches hosts open air opera and music events inside the old arena. Picture it at dusk. The stone tiers fill with people, lights rise across the sand, and voices carry into the night air. Roughly two thousand years after the first crowds, people still sit on this curve of stone to watch a show together.

Aventicum also had a theatre, in a different part of the site, as well as public baths and homes with painted walls and mosaic floors. The town was linked to the wider Roman world by roads and by water. A harbour on the shore of Lake Murten connected it to a network of lakes and rivers. Goods moved in by boat. Stone, wine, oil and fine pottery could all travel this way across the region.

The good years did not last forever. In the third century, the Roman frontier came under heavy pressure, and Germanic groups raided deep into this region. Aventicum suffered badly in this period. The town shrank, and life slowly moved elsewhere. Over the following centuries, people took Roman stone for new buildings. Fields spread across the old streets. The medieval village of Avenches grew on the hill, and the Roman city sank quietly into the soil.

So take one last look around you. The single column, the curved arena, the line of the old wall on the hill. Much of what you see above ground is only a small part of the story. The rest lies under the grass, under the roads, under the gardens of modern homes. As you walk back toward Murten and the lake, look at the fields with new eyes. Somewhere below them, a Roman street is still waiting.