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🏛️ Aqueduc gallo-romain du Gier

Archaeology - Ancient Rome France Europe

🏛️ Aqueduc gallo-romain du Gier
Ancient Roman aqueduct supplying Lugdunum (Lyon), spanning multiple communes in the Rhône valley


🕐 2 min read · Updated 2 Apr 2026 at 17:08
📋 Fast Facts
  • Constructed between 19 BC and 10 AD
  • Transported water approximately 80 kilometers from the Gier River to Lugdunum
  • Operated for over four centuries, supplying the city's growing population
  • Classified as Monuments Historiques by the French Ministry of Culture

The Aqueduc du Gier, also known as the Aqueduc du Mont-Pilat, represents one of the most significant engineering achievements of Roman Gaul. Built to supply water to the city of Lugdunum (modern-day Lyon), the aqueduct channeled water from the Gier River near Saint-Chamond across approximately 80 kilometers of terrain, serving the city's inhabitants for over four centuries. The structure demonstrates the Romans' advanced hydraulic knowledge and mastery of large-scale infrastructure projects ...

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