March on Rome
Above the proscenium arch is a plaque commemorating the rebuilding: "Vittorio Emanuele III Rege, Benito Mussolini Duce, Lodovicus Spada Potenziani, Romae Gubernator Restituit MCMXXVIII—VI”". Confusingly the dates appear to be back to front. (The VI refers to the sixth year after the Fascist's March on Rome of 1922.)