
Gallo-Roman Lutetia Grew From a Marshy Seine Island Settlement
Julius Caesar's lieutenant Labienus defeated the Parisii on the banks of the Seine, transforming the island settlement of Lutetia into a Roman provincial center. Roman engineers built stone baths, an amphitheatre, and aqueducts while fortifying the Île de la Cité. The river island served as a defensive stronghold and trading hub long before Paris became a royal capital.

