The Pont du Gard spans the Gardon, which flows along the bottom of a valley deeply carved in the surrounding plateau. This peaceful creek, where bathing can be so pleasant in summer, can transform itself into a destructive torrent following violent autumnal rains.

The structure has a height of 49 m; it is composed of three superimposed rows of arches, becoming narrower with each. The first level is 6.3m wide, 21.8m high and 142m long; it consists of 6 big arches. The third level, 3m wide, links the two edges of the plateau over a length of 275 m. Its 35 arches support the water channel.
The biggest stone blocks weigh close to 6 tons. They come from surrounding quarries of which some are still in activity