sentences:  The original architect was the Italian Francesco Tamburini; after his death it was completed by the Belgian architect Julio Dormal.The original auditorium "had eight boxes with metal grilles and a separate entrance, so that those in mourning could still attend performances, but remain dignifiedly sequestered from public view".The Colon's acoustics are considered to be so good as to place it in the top five performance venues in the world.