The three temples that remains are: Neptune Temple from approx. 450 BC, Hera Temple of approx. 550 BC as the oldest and Athena Temple - often referred to as Ceres temple from around 500 BC. The temples are beautiful and well-preserved and the museum 'Museo Archeologico di Paestum' is definitely worth a visit for history buffs.
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During the summer months, the temple ruins are home to a number of classical and modern concerts during the evenings.
Whilst it is not a big city, there is a good selection of very good restaurants in the town. In addition, there are sandy beaches located a little way out of town which are visited frequently by locals during the summer months. Here you can easily combine a visit rich in history and beach days.