This 1st-century structure was once the highest aqueduct bridge of the Roman world. It was built to supply water to Nîmes, one of the major hubs of the empire. The Pont du Gard played this essential role for five centuries and was later rediscovered during the Renaissance. It has since become one of the most visited touristic sites in France and, in 2004, it hosted the start of a stage of the only edition of the Tour du Languedoc-Roussillon, a short-lived successor to the Grand Prix du Midi Libre.
Long-distance attackers often met with success in Gap, including Jean-François Bernard claiming his first victory here in 1986 and Pierrick Fédrigo twenty years later. Since then, finishes in the city have gone to Norwegian world champion Thor Hushovd in 2011 and, two years later, Portuguese rider Rui Costa, a man with the rainbow jersey written in his future. When the Tour last visited Gap in 2015, Rubén Plaza ensured the tradition of successful breakaways remained unbroken.