Concierge.com's insider take:
Paestum is the site of the only well-preserved Greek temples north of Sicily. Originally named Poseidonia, the city was founded in the seventh century B.C. by the Sybarites on the all-important trade route along the west coast. The Romans took over in 273 B.C. and Latinized the name to Paestum. Famous for flowers, the area prospered until the end of the Roman era. Today, the forests have been cleared, and the majestic ruins of the city stand in the open on the green plain.