The Pont du Gard reminds us that throughout the ancient world, aqueducts were stone flags heralding the greatness of Rome. It was a critical link, helping keep a steady river of water flowing cross-country to Nîmes — one of the Roman Empires largest cities. The Pont du Gard’s main arch is the largest the Romans ever built — 80 feet across. All this work was designed to bring water into the still grand Roman city of Nîmes. Nîmes' Arena — which is still in use — is considered the best preserved from ancient Rome.