on ▁and ▁the ▁Pal ais ▁Le uch ten berg , ▁which ▁K len ze ▁had ▁previously ▁designed ▁with ▁identical ▁ex ter iors , ▁so ▁that ▁on ▁that ▁side ▁the ▁three ▁form ▁an ▁ensemble . ▁This ▁was ▁originally ▁the ▁main ▁fa ç ade ▁of ▁the ▁building , ▁designed ▁by ▁K len ze ▁with ▁a ▁project ing ▁central ▁bay ▁and ▁a ▁bal con y ▁above ▁the ▁main ▁entrance , ▁and ▁with ▁details ▁echo ing ▁his ▁B azar ▁building ▁directly ▁across ▁the ▁O de ons platz . ▁Ar ound ▁ 1 8 5 0 , ▁the ▁building ▁was ▁extended ▁to ▁the ▁west . ▁ ▁From ▁ 1 8 7 8 ▁the ▁building ▁belonged ▁to ▁Prin ces ▁Alf ons ▁and ▁Ludwig ▁Ferdinand ▁of ▁Bav aria , ▁from ▁whom ▁its ▁older ▁names ▁are ▁derived . ▁Ludwig ▁Ferdinand ▁had ▁it ▁rem od elled , ▁and ▁around ▁ 1 9 0 0 ▁the ▁fa ç ade ▁on ▁W itt els bach er platz ▁was ▁emb ell ished ▁with ▁arch ed ▁door ways ▁and ▁a ▁bal con y . ▁ ▁The ▁building ▁was ▁badly ▁dam aged ▁in ▁World ▁War ▁II . ▁After ▁reconst ruction , ▁it ▁was ▁r ented ▁in ▁ 1 9 4 9 ▁to ▁S iem ens ▁& ▁H als ke , ▁a ▁prede cess or ▁of ▁S iem ens ▁AG , ▁who ▁initially ▁used ▁it ▁for ▁their ▁motor ▁pool ▁and ▁cas ino ▁business . ▁After ▁Prince ▁Ludwig ▁Ferdinand ▁died ▁in ▁ 1 9 4 9 , ▁the ▁c ous ins ▁Hermann ▁von ▁S iem ens ▁and ▁Ernst ▁von