National Geographic : 1951 Jul
Pont du Gard Endures as a Rugged Monument to Romans Who Built It 20 Centuries Ago Using no cement, imperial engineers constructed an aqueduct to carry pure water from Uzes to Nimes (opposite page). They overcame contours with bridges, tunnels, and siphons; they hung scaffolds on these jutting stones. Medieval men, too negligent to clean out its limestone deposits, abandoned the structure and even quarried it. This bridge, leaping the River Gard (lower left), is a spectacular remnant of the 30-mile water system. A modern road follows the lower level. The central arch frames the village of Castillon.