Around I9AD the Romans embarked on an ambitious scheme to transport fresh water from the source of the River Eure at Uzès down to Nîmes. A 50-km aqueduct did the trick, and the magnificent triple tier of arches spanning the rock-strewn River Gard, near Remoulins, stands as an impressive monument to their skill. There are buses from Avignon and Nîmes, plus day trippers aplenty during summer.