The Poseidon Temple, built around 450 BC, boasts 36 fluted columns. Photo © Diane Weidenbenner On my trip to Italy, with a close friend, we visited the must-see places in Rome, Florence, Pisa and Tuscany. We rented a car while we were there and drove down the Amalfi Coast one day, on our way to Paestum, in the Campania region. The guide book mentioned that at one time, Greek ruins second only to Greece could be found in the small coastal town at the end of the peninsula. The guide book cautioned us that the three great Doric temples were mostly rubble, but it was worth the trip if you…