The ancient Roman aqueduct is shockingly noble in its symmetry, the rhythmic repetition of arches resonant with strength, testimony to an engineering concept that was relatively new in the 1st century AD, when the structure was built under Emperor Claudius. And, unsullied by tourists and by the vendors of postcards and Popsicles that dominate the site later in the day, nature is just as resonant, with the river flowing through its rocky gorge unperturbed by the work of master engineering that straddles it.
You can approach the aqueduct from either side of the Gardon River. If you choose the south side (Rive Droite), the walk to the pont (bridge) is shorter and the views arguably better. Although access to the spectacular walkway along the top of the aqueduct is now off-limits, the sight of the bridge is still a breathtaking experience. The nearby Espaces Culturels details the history of the bridge and includes an interactive area for kids.