Mnesicles (?) From the southeast Acropolis, Athens 421-405 B.C. The Erechtheum is an irregularly shaped Ionic temple which was built to house several sacred objects. Standing opposite the north side of the Parthenon, it counterbalances the heavy weight of the Parthenon on the Acropolis. The Erechtheum sits on uneven ground. Very different porches on the north and south sides balance each other.

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