ALESA, or HALESA, in Ancient Geography, a town of Sicily, on the Tyrrhenian sea, built according to Diodorus Siculus, by Archonides of Herbita, in the second year of the 94th Olympiad, or 423 years before Christ; situated on an eminence about a mile from the sea; now in ruins. It enjoyed immunity from taxes under the Romans (Diodorus, Cicero). The inhabitants were called Halici (Cicero, Pliny); also Alefimi, and Alefimi.