▁the ▁entrance ▁of ▁the ▁Cass aro ▁( the ▁main ▁and ▁most ▁ancient ▁street ▁of ▁the ▁city ) ▁from ▁Cor so ▁Cal ata f imi ▁( the ▁way ▁to ▁Mon re ale ) ▁and ▁is ▁located ▁beside ▁Pal azzo ▁dei ▁Norm anni , ▁royal ▁palace ▁of ▁Pal ermo . ▁The ▁gate ▁was ▁built ▁to ▁celebr ate ▁the ▁Charles ▁V ' s ▁con quest ▁of ▁Tun is ▁( 1 5 3 5 ) ▁and ▁his ▁visit ▁to ▁the ▁capital ▁of ▁the ▁Kingdom ▁of ▁Sic ily . ▁ ▁History ▁ ▁According ▁to ▁the ▁historian ▁T omm aso ▁F az ello ▁the ▁original ▁gate ▁was ▁built ▁in ▁the ▁ 1 5 th ▁century . ▁The ▁building ▁was ▁initially ▁called ▁" Port a ▁dell ' A qu ila " ▁(" G ate ▁of ▁the ▁E agle "), ▁but ▁the ▁people ▁of ▁Pal ermo ▁got ▁used ▁to ▁call ▁it ▁" Port a ▁Nu ova " ▁(" New ▁Gate "). ▁ ▁After ▁the ▁Charles ▁V ' s ▁con quest ▁of ▁Tun is , ▁the ▁Emperor ▁came ▁to ▁Sic ily . ▁He ▁entered ▁in ▁Pal ermo ▁through ▁this ▁gate ▁on ▁ 5 ▁September ▁ 1 5 3 5 . ▁In ▁order ▁to ▁comm emor ate ▁this ▁event , ▁the ▁Senate ▁of ▁Pal ermo ▁decre ed ▁to ▁re build ▁the ▁gate ▁in ▁a ▁more ▁sum pt uous ▁style . ▁The ▁Vic ero y ▁of ▁Sic ily ▁Marc anton io ▁Col onna ▁set ▁off ▁the ▁construction ▁in ▁ 1 5 8 3 . ▁The ▁gate ▁was ▁completed ▁in ▁ 1 5 8 4