Temple of Hera (550 BC)
The Temple of Hera is the oldest of the three temples, built about 550 BC. It is sometimes called the Basilica, based on an error of earlier archaeologists in thinking it was a Roman public building. Unlike the other temples, the dedication of this one is certain, thanks to inscriptions to the goddess Hera on the temple. An open-air altar was unearthed in front of the temple, where the faithful could attend rites and sacrifices without entering the cella (the holiest area accessed by priests).