Roman Megastructures

Lyon is the third-largest city in France but during ancient times, it was the largest; at the time, the capital of the Gauls was called Lugdunum.

During the Gallic Wars, without putting up a fight, whole cities immediately sided with Rome and even took advantage of the generosity of the emperors, from Julius Caesar to Constantine the Great.

With its 2,185 monuments, Paris is the world's most touristic capital city; each part of the riverbank and each neighborhood bears witness to this tremendous wealth.