This is the Archaic temple of Athena, also known as the poros temple. It was built circa the 5th century BC on top of an even older structure. The temple was damaged once in 480 BC by the falling rocks that thwarted the Persian invasion of Delphi. In 373 BC, the temple was demolished by an earthquake. The temple was Doric in order, peripteral, and hexastyle (6 columns on the narrow sides, 12 on the long sides).

Archaic Temple of Athena Archaic Temple of Athena