Anzio (än´tsyō), Lat. Antium, town (1991 pop. 33,497), in Latium, central Italy, on the Tyrrhenian Sea. It is a seaside resort with a fishing industry. A Volscian town, it was captured by Rome in 341 BC and became a favorite resort of the Romans. Nero and Caligula were born there; among the ruins of Nero's villa two famous statues, the Apollo Belvedere and the Girl of Anzio, were found. Anzio declined in the Middle Ages, but it revived c.1700 and became a residence of the popes. During World War II, Allied troops landed (Jan., 1944) at Anzio and nearby Nettuno to draw German forces from Cassino, thus effecting a breakthrough (May, 1944) to Rome.