The Battle of Salamis (Ancient Greek: Ναυμαχία τῆς Σαλαμῖνος, Naumachia tēs Salaminos) was fought between an Alliance of Greek city-states and the Persian Empire in September 480 B.C.E., in the straits between the mainland and Salamis, an island in the Saronic Gulf near Athens. It marked the high-point of the second Persian invasion of Greece which had begun in 480 BC.