▁building ▁in ▁ 2 0 0 0 . ▁ ▁Change ▁in ▁name ▁ ▁The ▁sc aff old ing ▁conce aling ▁the ▁fac ade ▁was ▁removed ▁on ▁ 1 5 ▁August ▁ 1 8 6 7 ▁in ▁time ▁for ▁the ▁Paris ▁Ex position ▁of ▁ 1 8 6 7 . ▁The ▁official ▁title ▁of ▁the ▁Paris ▁Opera ▁was ▁prom in ently ▁displayed ▁on ▁the ▁ent abl ature ▁of ▁the ▁giant ▁Cor inth ian ▁order ▁of ▁couple d ▁columns ▁front ing ▁the ▁main - floor ▁log gia : ▁ ▁" AC A DE M IE ▁I MP ER IA LE ▁DE ▁M US I QUE ". ▁When ▁the ▁em peror ▁was ▁de posed ▁on ▁ 4 ▁September ▁ 1 8 7 0 ▁as ▁a ▁result ▁of ▁the ▁dis astr ous ▁Franco - Pr uss ian ▁War , ▁the ▁government ▁was ▁replaced ▁by ▁the ▁Third ▁Republic , ▁and ▁almost ▁immediately , ▁on ▁ 1 7 ▁September ▁ 1 8 7 0 , ▁the ▁Opera ▁was ▁renamed ▁Thé âtre ▁National ▁de ▁l ' Op éra , ▁a ▁name ▁it ▁kept ▁until ▁ 1 9 3 9 . ▁In ▁spite ▁of ▁this , ▁when ▁it ▁came ▁time ▁to ▁change ▁the ▁name ▁on ▁the ▁new ▁opera ▁house , ▁only ▁the ▁first ▁six ▁letters ▁of ▁the ▁word ▁I MP ER IA LE ▁were ▁replaced , ▁giving ▁the ▁now ▁famous ▁" AC A DE M IE ▁N ATION A LE ▁DE ▁M US I QUE ", ▁an ▁official ▁title ▁which ▁had ▁actually ▁only ▁been ▁used ▁during ▁the ▁approximately ▁two - year