- between , ▁Ma estro ▁M ies ’ ▁vision ▁has ▁become ▁ever ▁more ▁pron ounced ▁in ▁these ▁three ▁ 2 2 - story ▁r ental ▁buildings . ▁Upper - level ▁flo ors ▁command ▁views ▁of ▁Dow nt own ▁New ark ▁and ▁the ▁Manh attan ▁sky line . ▁ ▁A ▁rect il ine ar ▁pr ism , ▁the ▁Col onna de ▁A part ments ▁measures ▁ 4 4 6 ▁feet ▁by ▁ 6 6 ▁feet ▁and ▁contains ▁ 5 6 0 ▁apart ments . ▁( It ▁is ▁M ies ’ ▁most ▁exp ans ive ▁structure .) ▁Each ▁bay ▁of ▁the ▁building , ▁that ▁is ▁the ▁distance ▁between ▁two ▁struct ural ▁columns , ▁measures ▁ 2 2 ▁feet ▁and ▁contains ▁four ▁windows . ▁Each ▁of ▁the ▁two ▁Pav il ion ▁A part ments ▁to wers ▁is ▁ 2 1 4 ▁feet ▁by ▁ 6 6 ▁feet ▁with ▁ 3 4 0 ▁apart ments ▁each ▁( 6 8 0 ▁total ). ▁Each ▁tower ▁is ▁a ▁compact ▁mass , ▁symmet rical ▁unto ▁itself , ▁fr amed ▁by ▁four ▁corners ▁that ▁have ▁a ▁particular ▁a est h etic ▁earlier ▁revealed ▁at ▁M ies ' ▁work ▁for ▁the ▁Illinois ▁Institute ▁of ▁Technology . ▁The ▁corners ▁consist ▁of ▁two ▁wide ▁fl anges ▁at ▁the ▁center - lines ▁and ▁an ▁eight - inch ▁angle ▁w eld ed ▁between ▁- ▁a ▁feature ▁shared ▁with ▁most ▁of ▁M ies ' ▁other ▁to wers . ▁These ▁to wers ▁were ▁built ▁with ▁rein for ced ▁concrete ▁columns ▁to ▁reduce ▁costs , ▁while ▁a ▁skin ▁of