The temple is a Doric peripteral hexastyle in antis, with 13 columns at the sides; its length is 104 ft., its breadth 452 ft., its height, to the top of the pediment, 33 ft.
It was a peripteral hexastyle, and must have had at least nineteen columns at the sides; the portion excavated shows that its total width is 744 ft., the width of the cella 382 ft., the lower diameter of the columns 64 ft.
640, is to be dated after 440 B.C. It was a peripteral hexastyle of thirty-six columns, with a total length of 1602 ft.
The temple was peripteral with 46 columns in its peristyle.
In antis, prostyle, peripteral, dipteral, hypaethral; c. 3 on inter-columniation - pycnostyle, systyle, eustyle, &c.; c. 4 on foundations, steps and stylobates; c. 5 on the Ionic order, its form and details.