The Ionic order in conjunction with
the Doric order was employed in the Propylaia, a monumental gateway
of the Akropolis. This masterpiece of Mnesicles, built between
437-432 BC, presents an irregularity of plan because he adapted
the design to the peculiarities of the site.
Designed by architects Callicrates and Iktinus, in 447 BC,under
the surveillance of Phidias, Parthenon is the best example of
the Doric style and "the most faultless in design and execution
of all buildings erected by man"
The Erechtheion occupies a sloping site on the Akropolis, where
an older temple, destroyed by Persians, once had stood. Spoils
of the Persian comquest were preserved in it with other relics,
held in special veneration.