ène ▁Del ac ro ix . ▁Unfortunately , ▁all ▁the ▁inter iors ▁were ▁burn ed ▁in ▁ 1 8 7 1 ▁by ▁the ▁Paris ▁Comm une . ▁ ▁The ▁Be aux - Ar ts ▁style ▁ ▁During ▁the ▁same ▁period , ▁a ▁small ▁revolution ▁was ▁taking ▁place ▁at ▁the ▁É cole ▁des ▁Be aux - Ar ts , ▁led ▁by ▁four ▁young ▁architect s ; ▁Joseph - Louis ▁Duc , ▁F éli x ▁Dub an , ▁Henri ▁Lab rou ste ▁and ▁Lé on ▁Va udo yer , ▁who ▁had ▁first ▁studied ▁Roman ▁and ▁Greek ▁architecture ▁at ▁the ▁Villa ▁Med ici ▁in ▁Rome , ▁then ▁in ▁the ▁ 1 8 2 0 s ▁began ▁the ▁system atic ▁study ▁of ▁other ▁historic ▁architect ural ▁styles ▁including ▁French ▁architecture ▁of ▁the ▁Middle ▁A ges ▁and ▁Renaissance . ▁They ▁instit uted ▁teaching ▁about ▁a ▁variety ▁of ▁architect ural ▁styles ▁at ▁the ▁É cole ▁des ▁Be aux - Ar ts , ▁ ▁and ▁installed ▁fragments ▁of ▁Renaissance ▁and ▁Med ieval ▁buildings ▁in ▁the ▁cour ty ard ▁of ▁the ▁school ▁so ▁students ▁could ▁draw ▁and ▁copy ▁them . ▁Each ▁of ▁them ▁also ▁designed ▁new ▁non - class ical ▁buildings ▁in ▁Paris ▁inspired ▁by ▁a ▁variety ▁of ▁different ▁historic ▁styles ; ▁Lab rou ste ▁built ▁the ▁Sainte - G ene vi ève ▁Library ▁( 1 8 4 4 – 5 0 ); ▁ ▁Duc ▁designed ▁the ▁new ▁Pal ais ▁de ▁Justice ▁and ▁Court ▁of ▁Cass ation ▁on ▁the ▁Î le - de - la - C ité ▁( 1 8