[2] The name of the colony derives from the local veneration of the Greek demigod and mythological hero Hercules, also later adopted by the Romans, who was said to have constructed the ancient path that passed through the region from Spain to Italy.
After the Gallic Wars, Monoecus, which served as a stopping-point for Julius Caesar on his way to campaign in Greece, fell under Roman control as part of the Maritime Alps province (Gallia Transalpina).
The commentator Servius's use of the passage (in R. Maltby, Lexicon of Ancient Latin Etymologies, Leeds) asserts, under the entry portus, that the epithet was derived: dictus autem Monoecus vel quod pulsis omnibus illic solus habitavit, vel quod in eius templo numquam aliquis deorum simul colitur.
The port is mentioned in Pliny the Elder's Natural History (III.v) and in Tacitus' Histories (III.42), when Fabius Valens was forced to put into the port (Fabius Valens e sinu Pisano segnitia maris aut adversante vento portum Herculis Monoeci depellitur).
[4] In 2011, Jean Michel Jarre performed a free concert in front of 85,000 spectators, to celebrate the wedding of Prince Albert II and Charlene Wittstock.
The Port Hercule is home to the Foire de Monaco, an annual fair that runs from October to November.