Pont du Gard

The Pont du Gard is a Roman aqueduct bridge built in the first century AD to carry water more than fifty kilometres to the colony of Nemausus, now Nîmes. It crosses the Gardon near Vers-Pont-du-Gard in southern France, and is one of the best preserved structures of its kind anywhere. UNESCO added it to the World Heritage list in 1985 for its preservation, its historical importance and its engineering. Three tiers of arches stand without mortar in the upper courses, and the river beneath is swimmable, which is how most people spend the afternoon.