In 61 BCE a Roman seaborne expedition, probably led by Julius Caesar himself, landed at present-day La Coruña (Brigantium) with the intention of installing a port and commercial settlement. There had already been Roman colonisation along the Mediterranean facade of the Iberian Peninsula and along the south and south-west from the 2nd century BCE. The port of Brigantium played an important role during the Cantabrian Wars (29-19 BCE). Once peace was restored, its strategic maritime role at the entrance to the Bay of Biscay, as well as that of a trading station, were confirmed. It became a rear base for the conquest of the British Isles while Galicia was being Romanised.
Under the name of Farum Brigantium, the Tower was probably erected in the 1st century CE, at the latest in the reign of Trajan (98-117). The votive inscription on a small ancillary construction would appear to bear this out. This monumental lighthouse is located at the entrance to La Coruña harbour, in the north-west of the Iberian Peninsula. It is designed to facilitate navigation along the rugged Galicia coastline, on a strategic point on the sea route linking the Mediterranean to northwest Europe.