0 0 0 . ▁On ▁this ▁land ▁( current ▁site ▁of ▁the ▁Georgia ▁State ▁Capit ol ) ▁was ▁built ▁a ▁two - story ▁brick ▁structure ▁( with ▁an ▁additional ▁two - story ▁cup ola ) ▁for ▁the ▁city ▁hall ▁as ▁well ▁as ▁some ▁court ▁functions . ▁Each ▁floor ▁was ▁ 7 0 ▁by ▁ ▁providing ▁nearly ▁ ▁of ▁space . ▁It ▁opened ▁on ▁October ▁ 1 7 , ▁ 1 8 5 4 ▁and ▁served ▁for ▁three ▁dec ades ▁during ▁which ▁time ▁it ▁served ▁as ▁camp ground s ▁for ▁the ▁occup ying ▁Union ▁army ▁during ▁the ▁war ▁and ▁was ▁briefly ▁the ▁state ▁capit ol ▁during ▁ 1 8 6 8 ▁when ▁the ▁capital ▁first ▁moved ▁from ▁Mil ledge ville , ▁Georgia . ▁ ▁It ▁was ▁demol ished ▁in ▁ 1 8 8 5 . ▁In ▁ 1 8 8 2 , ▁Atlanta ▁City ▁Hall ▁was ▁re located ▁to ▁the ▁old ▁chamber ▁of ▁commerce ▁building , ▁which ▁was ▁four ▁stories ▁tall ▁and ▁located ▁on ▁the ▁n ortheast ▁corner ▁of ▁P ry or ▁and ▁Hunter ▁( now ▁ML K ▁Bl vd ). ▁It ▁was ▁the ▁city ▁hall ▁from ▁ 1 8 8 2 ▁to ▁ 1 9 1 1 . ▁▁ 1 9 1 1 – 1 9 3 0 ▁City ▁Hall ▁building ▁ ▁In ▁ 1 9 1 1 , ▁the ▁city ▁hall ▁moved ▁to ▁what ▁once ▁the ▁U . S . ▁Post ▁Office ▁and ▁Custom s ▁House ▁( At l anta ), ▁located ▁on ▁the ▁north ▁side ▁of ▁Mar iet ta ▁Street ▁between