|Summary:||Peripteral temple; slightly east of center of the Acropolis, under the remains of the Parthenon.|
|Date:||ca. 488 BC - 480 BC|
Foundation: 31.39 m x 76.82 m; first step: 26.16 m x 69.62 m.
Doric peripteral temple, 6 x 16 columns. Double cella with long cella at east end and smaller cella at west end, with opisthodomos and pronaos, both prostyle. East cella, 2 rows of interior columns, 10 columns in each row. West cella, 4 interior columns arranged in a square in the center.
Never completed past lower column drums and cella courses. Construction interrupted by the Persian invasion of 480/79 B.C., and the Parthenon was built over its ruins.