While the Parthenon was the most impressive temple on the Acropolis, another building, the Erechtheion was built to accommodate the religious rituals that the old temple housed. Construction of the Erechtheion began in 420 while the Peloponnesian war was interrupted by the Peace of Nikias and continued through some of the most difficult times for the Athenians at war. During this time the Athenians suffered a devastating defeat at Syracuse, saw their empire unravel through consecutive revolts, had their cherished democracy replaced by a brief oligarchy, and endured major defeat. The Erechtheion construction was concluded in 406 BCE, and soon thereafter, in 403 BCE Athens fell to the Spartans.
None of the dramatic events that marked the fall of Athens are present in the elegant Ionic lines of the Erechtheion. It seems that the cultural maturity of Athens as expressed through art was reaching a new apogee, just as the forces and institutions that made it possible were unraveling.
The Erechtheion is an intricate temple. It sprang from a complex plan that was designed to accommodate the radically uneven ground on the site, and to avoid disturbing sacred shrines like the altars to Poseidon (Erechtheus), and Hephaestus, or the spot where Poseidon hit the Acropolis with his trident. Other shrines that needed to be accommodated included the sacred olive tree, a well containing sea water (the Erechtheian Sea), the tomb of Kekrops, and the Pandrosion sanctuary.
The elegance and delicate forms of the Erechtheion contrast sharply with the neighboring Parthenon that counter-balances the architectural complex with its majestic, Doric presence. The temple faces east and its entrance is lined with six long Ionic columns. To the north and west the wall of the temple drops dramatically to almost twice the altitude of the front and south side’s. The temple is unusual in that it incorporates two porches (prostaseis); one at the northwest corner which is supported by tall Ionic columns, and one at the south-west corner which is supported by six massive female statues, the famous Caryatids.