The ancient harbour is an artificial basin dug in the swamps alongside the rocky spur on which is built the town of Fréjus. So it is located inland, 1200 meters from the sea.
We can follow the canal to the sea thanks to a crenelated wall on the West side. The basin is a irregular polygon around 17 hectares, limited on the South side by a 560 meters long parapet.
The harbour entry is distinguishable by a construction known as the « August’s Light », still visible today.
History noteworthy event : in 31 BC, the ancient Fréjus harbour welcomed the Roman emperor Octave-Auguste’s war ships, taken from the military general Marc-Antoine, Queen Cleopatra ally and lover, during the famous Actium battle. That story shows how important was the Fréjus harbour in these times.
On the North-West side of the basin, archeologists found an esplanade leading to an inner harbour thanks to blocks (under the « Porte d’Orée » carpark). This one, nearly intact, was used from the Middle Ages to the XVIIth century. By the way, he was called « the Pool » because its surface area had considerably decreased.
The sea and the land gave Fréjus plenty of ressources. Fishing especially supplyed the « allec » production, a « garum » variety, which was a sort of condiment made of fish flesh.
Since 1886, the ancient Roman harbour ruins are listed as Historical Monuments.