▁Category : C in ema ▁of ▁the ▁Philippines <0x0A> </s> ▁The ▁Old er ▁Par then on ▁or ▁Pre ‐ Par then on , ▁as ▁it ▁is ▁frequently ▁referred ▁to , ▁constit utes ▁the ▁first ▁endeav our ▁to ▁build ▁a ▁san ctu ary ▁for ▁Ath ena ▁Par then os ▁on ▁the ▁site ▁of ▁the ▁present ▁Par then on ▁on ▁the ▁Ac ropol is ▁of ▁Ath ens . ▁It ▁was ▁begun ▁shortly ▁after ▁the ▁battle ▁of ▁Mar athon ▁( c . ▁ 4 9 0 – 8 8 ▁BC ) ▁upon ▁a ▁massive ▁lim estone ▁foundation ▁that ▁extended ▁and ▁le ve led ▁the ▁southern ▁part ▁of ▁the ▁Ac ropol is ▁sum mit . ▁This ▁building ▁replaced ▁a ▁he k atom ped on ▁( mean ing ▁" h undred ‐ footer ") ▁and ▁would ▁have ▁stood ▁beside ▁the ▁arch a ic ▁temple ▁dedicated ▁to ▁Ath ena ▁Pol ias . ▁ ▁The ▁Old ▁Par then on ▁was ▁still ▁under ▁construction ▁when ▁the ▁Pers ians ▁s ack ed ▁the ▁city ▁in ▁the ▁Dest ruction ▁of ▁Ath ens ▁in ▁ 4 8 0 ▁BC , ▁and ▁raz ed ▁the ▁ac ropol is ▁during ▁the ▁Second ▁Pers ian ▁invasion ▁of ▁Greece . ▁The ▁existence ▁of ▁the ▁proto ‐ Par then on ▁and ▁its ▁destruction ▁was ▁known ▁from ▁Her odot us ▁and ▁the ▁drums ▁of ▁its ▁columns ▁were ▁plain ly ▁visible ▁built ▁into ▁the ▁cur tain ▁wall ▁north ▁of ▁the ▁E re ch the um . ▁Further ▁material ▁evidence ▁of ▁this ▁structure ▁was ▁revealed ▁with ▁the ▁exc av ations ▁of ▁Pan