This is the most ancient surviving temple in Greece. The walls were made of mud brick and the columns were originally wood with an engaged roof. The temple was Doric hexastyle, but with 16 columns on the long side that lined up with the columns on the inner cella. The columns alternated engaged vs. not engaged to give spaces for statues. This temple’s function was to be a museum holding significant artifacts. Aristotle thought Iphitos’s disc of the sacred truth was here, which said there would be no war during the Olympic games.