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Alba Longa(ăl`bə lông`gə), city of ancient Latium, in the Alban Hills near Lake Albano, c.12 mi (19 km) SE of Rome. It was a city before 1100 B.C. and apparently the most powerful in Latium. Legend says that it was founded by Ascanius, son of Aeneas, and that Romulus and Remus were born there, thus making it the mother city of Rome. Tradition also says that Tullus Hostilius, king of Rome, razed it in 665 B.C. Possibly Rome was founded from Alba Longa, and certainly the Romans destroyed it (c.600 B.C.). The modern Castel GandolfoCastel Gandolfo
, town (1991 pop. 6,784), in Latium, central Italy, in the Alban Hills, overlooking Lake Albano. Possibly occupying the site of ancient Alba Longa, it is the papal summer residence. The papal palace (17th cent.
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a city of ancient Latium, southeast of modern Rome: the legendary birthplace of Romulus and Remus