▁the ▁work ▁was ▁completed ▁by ▁the ▁opening ▁of ▁the ▁hall ▁in ▁ 1 9 5 0 , ▁though ▁the ▁sculpt ure ▁park ▁was ▁not ▁completed ▁until ▁the ▁ 1 9 6 0 s . ▁ ▁Ex terior ▁The ▁western ▁wall ▁of ▁the ▁building ▁is ▁domin ated ▁by ▁Anne ▁Gr im d alen ' s ▁sculpt ure ▁of ▁Har ald ▁Hard rå de ▁on ▁horse back . ▁Nic ▁Sch i ø ll ' s ▁sculpt ure ▁of ▁St . ▁Hall vard ▁is ▁at ▁the ▁front ▁of ▁the ▁building , ▁facing ▁Os lo f j ord . ▁ ▁Rel ief s ▁by ▁D ag fin ▁Wer ens ki old ▁face ▁the ▁square ▁and ▁are ▁mult icol oured ▁dep ict ions ▁of ▁mot ifs ▁from ▁the ▁Po etic ▁Edd a . ▁ ▁Joseph ▁Gr im eland ▁designed ▁the ▁bronze ▁relief ▁over ▁the ▁entrance ▁and ▁also ▁the ▁Os lo pi ke ▁(" Os lo ▁girl ") ▁high ▁up ▁on ▁the ▁wall . ▁ ▁Six ▁free - standing ▁sculpt ures ▁by ▁Per ▁P alle ▁Storm ▁in ▁front ▁of ▁the ▁building ▁dep ict ▁the ▁craft s men ▁who ▁built ▁the ▁building . ▁ ▁Main ▁Hall ▁The ▁building ' s ▁main ▁hall ▁was ▁decor ated ▁by ▁Hen rik ▁S ør ensen ▁and ▁Alf ▁R olf sen . ▁ ▁The ▁Hall ▁is ▁ 3 1 ▁metres ▁wide , ▁ 3 9 ▁metres ▁long ▁and ▁around ▁ 2 1 ▁metres ▁high . ▁ ▁The ▁floor ▁and ▁parts ▁of ▁the ▁walls ▁are ▁cl ad ▁in ▁mar ble . ▁ ▁The ▁room ▁has ▁a