Pont du Gard, part of a 31-mile aqueduct that supplied 11 million U.S. gallons of water per day to the Roman city of Nemausus (now Nîmes). Conduit was apparently coated with a mixture of olive oil, lard, and fig juice to facilitate water flow. #gar #gardon #roman #aqueduct #water #history #nimes #france #travel #river #engineering #provence