ian - American ▁architect ▁known ▁for ▁his ▁church ▁architecture , ▁in ▁particular ▁the ▁St . ▁Joseph ▁the ▁Bet ro th ed ▁Ukrain ian ▁Catholic ▁Church . ▁ ▁Early ▁life ▁and ▁education ▁ ▁He ▁was ▁born ▁in ▁the ▁town ▁of ▁Ro zh ni ativ ▁in ▁the ▁I vano - Fran k iv sk ▁region ▁of ▁Ukraine . ▁He ▁em igr ated ▁with ▁his ▁parents ▁to ▁Germany ▁and ▁then ▁to ▁Canada . ▁He ▁graduated ▁from ▁the ▁University ▁of ▁Toronto ▁with ▁a ▁degree ▁in ▁architecture ▁in ▁ 1 9 6 6 . ▁He ▁received ▁master ' s ▁degrees ▁in ▁architecture ▁and ▁in ▁city ▁planning ▁from ▁the ▁University ▁of ▁Pennsylvania , ▁Gr adu ate ▁School ▁of ▁Fine ▁Arts ▁in ▁ 1 9 7 2 . ▁ ▁Career ▁ ▁At ▁the ▁beginning ▁of ▁his ▁career , ▁Maz ur ke v ich ▁worked ▁for ▁Ludwig ▁M ies ▁van ▁der ▁Ro he , ▁as ▁well ▁as ▁the ▁architect ural ▁firm ▁of ▁Sk id more ▁O w ings ▁and ▁M err ill , ▁where ▁he ▁was ▁involved ▁with ▁the ▁design ▁of ▁the ▁ 1 0 0 - story ▁John ▁Han cock ▁Center ▁in ▁Chicago , ▁Illinois . ▁He ▁later ▁opened ▁up ▁his ▁own ▁firm ▁in ▁Philadelphia , ▁Pennsylvania , ▁where ▁he ▁purs ued ▁his ▁passion ▁in ▁religious ▁architecture . ▁ ▁His ▁most ▁prominent ▁architect ural ▁work ▁is ▁St . ▁Joseph ▁the ▁Bet ro th ed ▁Ukrain ian ▁Catholic ▁Church ▁in ▁Chicago , ▁Illinois . ▁Three - quarters ▁of ▁the ▁Church ' s ▁exterior ▁consists ▁of ▁cur ved ▁windows .   It