Bridges are counted among the most spectacular works of art and hold a special place in the history of engineering. They are the answer to a central challenge in the history of mankind – mastering the land with a view to connecting people. Over vertiginous cliffs, steep gorges, rivers with devastating torrents. Bridges continue to fascinate because they symbolize the human genius in overcoming the obstacles of nature. Throughout the centuries, the necessity of developing means of transport coupled with the ambition of establishing new world records has been a driving force of progress, forcing the pioneers to break new ground. Three bridges, three eras, three records of civil engineering. The Pont du Gard, the viaduct of Garabit and the viaduct of Millau.