▁interior ▁spaces ▁and ▁classical ▁fa ç ades . ▁They ▁followed ▁the ▁princip als ▁of ▁ 2 0 th - century ▁Be aux - Ar ts ▁tradition ▁of ▁classic ism . ▁Rel ating ▁to ▁some ▁of ▁their ▁core ▁princip als ▁in ▁design , ▁they ▁are ▁largely ▁Monument al ▁and ▁Or n amental . ▁ ▁Original ▁design ▁ ▁The ▁grey ▁Aber de en ▁gran ite ▁Full erton ▁Building ▁s its ▁on ▁ 4 1 , 1 0 0 ▁square ▁metres ▁( 4 4 2 , 4 0 0 ▁square ▁feet ) ▁of ▁land . ▁The ▁height ▁of ▁its ▁walls ▁measures ▁ 3 6 . 6 ▁metres ▁( 1 2 0   ft ) ▁from ▁the ▁ground . ▁The ▁building ▁has ▁Ne o - class ical ▁architect ural ▁features ▁which ▁include ▁a ▁two - store y ▁fl uted ▁Dor ic ▁col onn ades ▁on ▁their ▁heavy ▁base , ▁and ▁the ▁lo fty ▁port ico ▁over ▁the ▁main ▁entrance ▁with ▁tro phy ▁designs ▁and ▁the ▁Royal ▁Co at ▁of ▁Ar ms , ▁craft ed ▁by ▁Italian ▁Cav ali ere ▁Rud ol fo ▁N ol li . ▁Origin ally , ▁there ▁were ▁five ▁distinct ▁front ages , ▁each ▁treated ▁in ▁the ▁Dor ic ▁order . ▁ 1 4 ▁elev ators ▁served ▁the ▁four ▁flo ors ▁plus ▁the ▁bas ement ▁flo ors . ▁A ▁h ollow ▁cell ular ▁ra ft ▁foundation ▁was ▁proposed ▁by ▁the ▁original ▁contract ors ▁in ▁the ▁ 1 9 2 0 s ▁to ▁save ▁cost ▁because ▁bed rock ▁lies ▁directly ▁below ▁the ▁building . ▁The