<P> The friezes of the building's entablature were decorated on all sides with relief sculpture in the idealized classical style of the 5th century BC . The north frieze depicted a battle between Greeks entailing cavalry . The south frieze showed the decisive victory over the Persians at the battle of Plataea . The east frieze showed an assembly of the gods Athena, Zeus and Poseidon, rendering Athenian religious beliefs and reverence for the gods bound up in the social and political climate of 5th Century Athens . </P> <P> Some time after the temple was completed, around 410 BC a parapet was added around it to prevent people from falling from the steep bastion . The outside of the parapet was adorned by carved relief sculptures showing Nike in a variety of activities and all in procession . </P> <P> Architects Christian Hansen and Eduard Schaubert excavated the temple in the 1830s . The building had been totally dismantled in the 17th century and the stone built into the Turkish wall that surrounded the hill . A primitive anastylosis was carried out in 1836 when the temple was re-erected from remaining parts . A third restoration was completed in Summer 2010 . The main structure, stylobate and columns are largely intact, minus the roof and most of the tympanae . Fragments of the sculpted frieze are exhibited in the Acropolis Museum and the British Museum; copies of these are fixed in their place on the temple . </P>

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