polytropos' photos with the keyword: Pont

Provence – Pont du Gard The Pont du Gard is an ancient Roman aqueduct that crosses the Gardon River near the town of Vers-Pont-du-Gard in southern France. The Pont du Gard is part of an aqueduct that leads across the River Gard and then supplied the town of Nîmes with fresh drinking water from the sources at Uzès. The height difference between the source and the city of Nîmes was just 17 meters. This results in a slope of 34 centimeters per kilometer! And here lies the ingenuity of the entire structure: over the total length of 50 km, this slight gradient was exactly maintained and implemented. In the process, mountains were bypassed or pierced with tunnels, and river valleys with bridges were overcome without departing from the slight inclination. The Pont du Gard, built as three tiers of archways to bring water to the city of Nîmes, is the highest of all elevated Roman aqueducts, and one of the best preserved. It was added to UNESCO's list of World Heritage Sites in 1985 because of its historical importance. The aqueduct is built in three levels: - Lower level: 6 arches, 142 m long, 6 m wide, 22 m high - Middle level: 11 arches, 242 m long, 4 m wide, 20 m high - Upper level: 35 arches, 275 m long, 3 m wide, 7 m high Total height: 49 m Total lenght: 275 m Built: around 40 – 60 AD => Pont du Gard, Deutsch (43.94643, 04.53454); [70°] – handy shot