ACTIUM (anc. geog.), a town situated on the coast of Acarnania, in itself inconsiderable, but famous for a temple of Apollo, a safe harbour, and an adjoining promontory of the same name, in the mouth of the Sinus Ambracius, over against Nicopolis, on the other side of the bay: it afterwards became more famous on account of Augustus's victory over Antony and Cleopatra; and for quinquennial games instituted there, called Alia or Ludi Aliaci. Hence the epithet Actius, given to Apollo (Virgil). Actiaca era, a computation of time from the battle of Actium. The promontory is now called Capo di Figalo.