Building bridges
Utilising resources
Pont du Gard / Nîmes, France
This ancient bridge, finished in the year 40 BC, was part of a 50-kilometre aqueduct that provided the Roman town of Nemasus – now known as Nîmes – with 20 million litres of water per day. Even now, the Pont du Gard is an architectural masterpiece: it was built completely without mortar and has an incline of only 34 centimetres per kilometre.