Because of the destructive force of the Rhône during high water the Romans only built two bridges across the river. One floating construction of wood in Arles and the other a stone built specimen near Vienne. The masons of the Middle Ages ventured to build the famous Pont d'Avignon, which ended up in ruins, and the colossal bridge of Pont-Saint-Esprit, which is only partly visible in this picture. The total length of the bridge is one kilometre, its many arches not only spanning the actual river but also the zone that is inundated during extremely high water. Photo Paul Smit.