▁while ▁the ▁fac ade ▁designed ▁by ▁S ull ivan ▁exempl ifies ▁his ▁more ▁express ive ▁approach . ▁ ▁The ▁tall est ▁building ▁is ▁known ▁as ▁" 1 8 ▁South ▁Michigan ▁Avenue " ▁and ▁was ▁previously ▁called ▁the ▁G age ▁Brothers ▁and ▁Company ▁Building . ▁Before ▁the ▁Chicago ▁street ▁addresses ▁were ▁changed ▁in ▁ 1 9 0 9 , ▁the ▁building ▁had ▁the ▁address ▁of ▁ 1 3 0 ▁S . ▁Michigan ▁Avenue . ▁The ▁orn amental ▁fl our ishes ▁at ▁the ▁top ▁of ▁S ull ivan ' s ▁fa ç ade ▁were ▁pushed ▁up wards ▁when ▁four ▁stories ▁were ▁added ▁in ▁ 1 9 0 2 ▁by ▁different ▁architect s . ▁This ▁is ▁one ▁of ▁only ▁five ▁buildings ▁in ▁Chicago ▁designed ▁by ▁Louis ▁S ull ivan ▁that ▁are ▁still ▁standing . ▁ ▁The ▁two ▁smaller ▁buildings ▁to ▁the ▁south ▁are ▁also ▁part ▁of ▁the ▁G age ▁Group ▁Build ings . ▁The ▁Ed son ▁Keith ▁and ▁Company ▁Building ▁is ▁connected ▁to ▁the ▁G age ▁Building ▁and ▁is ▁located ▁at ▁ 2 4 ▁S . ▁Michigan ▁Avenue . ▁The ▁The odore ▁A scher ▁and ▁Company ▁Building ▁is ▁also ▁known ▁as ▁the ▁ 3 0 ▁South ▁Michigan ▁Building . ▁ ▁See ▁also ▁Chicago ▁architecture ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : Ch icago ▁school ▁architecture ▁in ▁Illinois ▁Category : Com mer cial ▁buildings ▁completed ▁in ▁ 1 8 9 0 ▁Category : Com mer cial ▁buildings ▁completed ▁in ▁ 1 8 9 9 ▁Category : Louis ▁S ull ivan ▁buildings ▁Category : Ro ose vel