The temple was decastyle, dipteral, with pronaos and vestibule, but no opisthodomos.
The most celebrated example of such ornamentation was the box of Kypselos, in the opisthodomos of the temple of Hera at Olympia.
But, if the western room of the Periclean temple was the opisthodomos, where was the proper?
Demosthenes (xxiv, 136) speaks of a fire in the opisthodomos.
The pronaos and opisthodomos were each bounded by two Doric columns between antae, surmounted by metopes.