It fell to the Romans in 169 BC and the city was given a new lease of life in 32/31 BC when Octavian founded the Colony of here. Coins of colonial Dion survive. It experienced its second heyday during the reigns of 2nd- and 3rd-century AD Roman emperors who were fond of Alexander the Great. Dion's final important period was in the 4th and 5th centuries AD when it became the seat of a bishopric. It was abandoned following major earthquakes and floods.