LEFT: - The first Temple of Hera (also called The Basilica); built around 550 BC by the Greek colonists; is the oldest surviving temple in Paestum and the one furthest south. 18th-century archaeologists named it 鈥榯he Basilica'.RIGHT: - The Temple of Poseidon / Neptune (also known as the second Temple of Hera) was built around 460-450 BC.- Paestum was a major ancient Greek city on the coast of the Tyrrhenian Sea in Magna Graecia (southern Italy). The ruins of Paestum are famous for their three ancient Greek temples in the Doric order; dating from about 550 to 450 BC.Italy. 2021.