Paestum (pĕstˈəm) [key], ancient city of Lucania, S Italy. It was a colony of the Greek city of Sybaris (c.600 B.C.) and was first named Posidonia. It flourished with the rest of Magna Graecia through the 6th cent. B.C. The Romans took the city in 273 B.C.; they called it Paestum. The ruins, near the present Pesto, include some of the finest and best-preserved Doric temples in existence.
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