This fourth installment of our What The Rivers Remember series follows On The Oise, Joan Of Arc, The River That Shaped Europe: Sailing Eleanor Of Aquitaine’s Bordeaux and On The Seine: Richard The Lionheart, Monet & The Chalk Cliffs Of Normandy, which left us on the Normandy coast, watching a river meet the sea. This one starts further south and further back, on a river two armies tried to cross on their way to fight Rome.

In September 218 B.C., a Carthaginian general named Hannibal reached the lower Rhône with roughly 38,000 infantry, 8,000 cavalry and 37 elephants, and found the far bank held by several thousand Volcae warriors with no intention of letting him cross. Two hundred seventy-six years later, in 58 B.C., a different army tried the same river from the opposite direction, and the man who stopped them, Julius Caesar, went on to build the province that made this stretch of water Roman for the next 500 years. Between them, the two campaigns turned the Rhône and its tributary, the Saône, into the corridor Rome used to hold Gaul — and the region still shows it, in a temple, two theaters, an arena and an arch that have outlasted the empire that built them by a couple of millennia.

An Elephant Problem

Hannibal was 29 years old and marching from Spain toward Italy, aiming to fight Rome on ground of his own choosing rather than wait for Rome to come to him. The Rhône, swollen with autumn rain and running through hostile Gallic territory, stood in his way near modern Arles, where the river ran wide and fast and, according to Polybius, the closest surviving account of the campaign, was guarded on the far bank by the Volcae, a tribe determined to keep the Carthaginians on the western side.

Hannibal solved the problem with patience and a diversion. He sent a detachment upriver under a commander named Hanno to cross unopposed some 25 miles north, circle back overnight and hit the Volcae from behind while the main force crossed under cover of the ambush. It worked. Light infantry and cavalry crossed first, in boats and dugout canoes bought or built from local Gallic tribes; the elephants came last, coaxed onto earth-covered rafts lashed together in pairs and towed across, panicked animals and all — several reportedly bolted into the water mid-crossing and swam the rest of the way, trunks above the surface. The whole operation, by Polybius’s count, took about four days. Hannibal never fought Rome’s legions on the Rhône; the force Rome sent to intercept him arrived three days after he had already turned east toward the Alps. It was, in the end, a river he crossed rather than a river he fought over — but the crossing itself, elephants and all, became one of the most retold set pieces of the ancient world, and it marked the first time Rome understood a Carthaginian army could reach Italy on foot.

Caesar Burns the Bridge

A century and a half later, the Rhône hosted a second migration Rome liked even less. In the spring of 58 B.C., the Helvetii — a Gallic confederation from what is now Switzerland, pressed by Germanic tribes to their east — decided to relocate their entire population, an estimated 350,000 people, west across the Rhône and through Roman Transalpine Gaul toward the Atlantic coast. Their planned route crossed a bridge at Geneva, the frontier town of the allied Allobroges tribe.

Julius Caesar, newly appointed governor of Gaul and looking, by his own later account in the Commentarii de Bello Gallico, for exactly this kind of pretext, marched to Geneva, destroyed the bridge and built a defensive rampart — 19 Roman miles long, 16 feet high, by his own figures — along the Rhône’s bank between Lake Geneva and the Jura mountains. Blocked, the Helvetii tried a second route north through the narrow Pas de l’Écluse, a gorge so tight, Caesar noted, that wagons could barely pass single file. He shadowed the migration for weeks, and when he caught the Tigurini canton still crossing the Saône — the river Romans called the Arar — with three-quarters of the tribe already over, he ambushed the quarter left behind and cut them down before they reached the far bank, avenging, by his own reckoning, a defeat the Tigurini had handed Rome half a century earlier. The main Helvetii force fought on for another two weeks before Caesar beat them decisively near Bibracte, forcing the survivors to submit and turn back toward Switzerland as Roman clients. It was a border skirmish dressed up as a defensive campaign, and it was also the opening move of the Gallic Wars — eight years of fighting that ended with Gaul, and the Rhône-Saône corridor at its heart, fully absorbed into Rome.

Where Two Rivers Become an Empire’s Capital

Rome’s colonization followed the same river the wars had been fought over. In 43 B.C., Lucius Munatius Plancus, a former Caesar lieutenant serving as governor of the region, founded a colony at the point where the Saône flows into the Rhône, on a hill the Romans called Fourvière. He named it Lugdunum. Within a generation it was the capital of Gallia Lugdunensis and, for practical purposes, the administrative center of Roman Gaul — the hub of the road network Augustus ordered built out from it, the seat of the imperial mint, and, in 10 B.C., the birthplace of a future emperor, Claudius, born in the city his own father had been stationed to help govern. A second emperor, Caracalla, was born there two centuries later.

Modern Lyon sits directly on top of Lugdunum, and enough of it survives to walk through: two Roman theaters on the Fourvière hillside, the larger built under Augustus around 15 B.C. and still in use for performances during the summer Nuits de Fourvière festival, and the Gallo-Roman Museum built partly underground beside them, holding mosaics, inscriptions and the bronze Claudian Tables — the emperor’s own speech to the Senate, arguing, successfully, that Gauls born in Lugdunum deserved a place in Roman government. The confluence itself, where the clearer Rhône meets the slower, greener Saône, is visible today from the Confluence district a few miles south of the old Roman hill, the two currents running side by side for a stretch before finally mixing — a fittingly literal picture of two rivers absorbed into one empire.

Downriver, the Province Rome Built to Last

South of Lyon, the Rhône runs past a string of towns Rome didn’t just pass through but built to last, and three of them still anchor the river’s cruise itineraries today.

Vienne, 20 miles south of Lyon, holds the Temple of Augustus and Livia, raised in the emperor’s own lifetime and one of only two Roman temples still standing intact in France — a dedication, its oldest inscription reads, to “Rome and Augustus Caesar,” with Augustus’s wife Livia added to the joint dedication after her deification, a piece of imperial theology and small-town flattery carved into the same stone. Above the town, cut into the slope of Mont Pipet, the Roman theater built around A.D. 40-50 seats roughly 13,000, one of the largest that survives anywhere from antiquity, and still hosts the summer Jazz à Vienne festival.

Farther south, Orange keeps the best-preserved stage wall of any Roman theater on Earth — a 338-foot-long facade Louis XIV is said to have called the finest wall in his kingdom — and, a short walk away, a triumphal arch raised between A.D. 10 and 25, its reliefs still showing captured Gallic weapons arranged in a fan, a permanent, carved reminder to the locals of who had won. Both are UNESCO World Heritage sites.

And at Arles — the same stretch of river Hannibal is thought to have crossed, 250 years before Rome built anything there at all — the Roman legacy runs deepest: an amphitheater completed around A.D. 90, built for 20,000 spectators and still in use today for Provençal bullfighting; the Baths of Constantine, the surviving corner of a fourth-century imperial palace; and a UNESCO designation covering the whole ensemble, Roman theater, cryptoporticus, baths and necropolis together, a rare case of one small city preserving nearly every category of Roman public building at once. Arles later became Van Gogh’s town, not Rome’s — he painted here in 1888 and 1889 — but the Roman city under his feet is, if anything, better preserved than the 19th-century one he sketched on top of it.

The Lines & Where Ships Cruise

The Rhône-Saône is a shorter, more compressed river system than the Seine or the Gironde, and cruise itineraries reflect it — most run Lyon to Avignon or the reverse, seven or eight nights, with Arles typically added as a final call or a pre- or post-cruise extension rather than a full port day. AmaWaterways, Viking, CroisiEurope, Scenic, Avalon Waterways and Uniworld all sail here.

AmaWaterways’ Colors of Provence runs Lyon to Arles, threading Vienne, the Pont du Gard — the Roman aqueduct outside Nîmes, a separate but related feat of the same imperial engineering that raised Orange’s arch — Avignon’s Palace of the Popes and Arles itself; its Essence of Burgundy & Provence extends the route north to Chalon-sur-Saône for a deeper run through Burgundy’s vineyards before turning south. Viking’s Lyon & Provence covers similar ground between Lyon and Avignon, pairing the Roman sites with a ride on the narrow-gauge Train de l’Ardèche. All the lines lean into the wine along this stretch as heavily as the history — Beaujolais and Côtes du Rhône vineyards climb the banks the whole way south — and Lyon, gastronomic capital of France by most any measure, gets at least a full day on nearly every itinerary before the ship turns toward Rome’s old province downstream.

What The River Remembers

Hannibal crossed this river once, in four desperate days, and never came back. Caesar came to guard it and stayed to build an empire’s road network from the point where it meets the Saône. Between the two of them, and the four centuries of Roman governors, engineers and emperors who followed, the Rhône became something the Seine and the Garonne never quite were: not just a route through history but the spine of an entire province, built in stone specifically so it would still be standing two thousand years later for a ship full of travelers to sail past.

That is the thread running under all four installments of this series so far. Rivers do not just witness what happens on their banks. Sometimes — a temple in Vienne, a theater in Orange, an arena in Arles — they hold onto it, in a form solid enough to touch, long after the people who built it are gone.

Next: the Rhine, where Charlemagne built the border that shaped Europe.

About This Series

What The Rivers Remember is an ongoing series exploring the people and forces that shaped Europe’s great waterways — the queens, soldiers, emperors and explorers whose stories are written into the rivers that river cruisers sail today. Each installment follows one river, or a constellation of rivers, tracing European history from the water rather than the shore excursion. [Read the series introduction → What The Rivers Remember]

Articles in this series:
— The River Remembers: On The Oise, Joan Of Arc
— Bordeaux River Cruise: Eleanor Of Aquitaine’s Story
— The Seine: Richard, Monet and the Chalk Cliffs of Normandy
— The Rhône and Saône: Caesar, Hannibal and the Roman Corridor
— The Rhine: Charlemagne, the Border That Shaped Europe — coming soon
— The Danube: The Habsburgs and the Connected Continent — coming soon
— The Douro and Tagus: Henry the Navigator and the Edge of the Known World — coming soon
— The Sources: Where Europe’s Rivers Begin — coming soon