The most famous attraction of Buenos Aires is the Colon Opera House (Spanish pronunciation of Columbus name), on the stage of which, along with Argentinean, the world's best performers performed, including Russian ones (F. Chaliapin, A. Pavlova, etc.). The magnificent renaissance facade of the Colon Theater, one of the most beautiful buildings for opera performances in the world, which also has excellent acoustics, proudly looks at Avenida Nueves de Julio in Buenos Aires. It is believed that this is one of the best theaters in the world in terms of acoustics and architecture. The interior of the theater contains 7 floors and can accommodate 2500 people. On the ground floor, behind the wall you can see hidden rooms with windows from which you can watch what is happening on the stage. Previously, those who came to see incognito performances came here. The theater is lit by hundreds of lights and a huge central chandelier, on which some singers hide during performances. Their voices sound as if coming from heaven, the auditorium impresses with its size, but they are inferior to the volume of the scene. The stage box was recently reconstructed and is now arranged so that the orchestra and ballet ensemble can hold parallel rehearsals in it: a soundproof metal curtain allows them not to interfere with each other. Along with opera performances, there are dramatic and ballet ones. In addition, the Buenos Aires Philharmonic Orchestra, ballet troupe, orchestra and choir of the Opera House perform on the same stage. The theater has its own theatrical workshops, where scenery and stage models, costumes and wigs, props and props are created. Under the three-story stage, there are rehearsal rooms, workshops and a dressing room where more than 16,000 costumes and 30,000 pairs of shoes are stored. The list of conductors and soloists performing here includes the names of Toscanini, Karayan, Bernstein, Chaliapin, Kallas, Sutherland and many others.