Opera house as they sing. This occurs in the Met's productions of operas such as "Aida" and "Tales of Hoffman". London's Royal Opera House, which was remodeled in the late 1990s, retained the original 1858 auditorium at its core, but added completely new backstage and wing spaces as well as an additional performance space and public areas. Much the same happened in the remodeling of Milan's La Scala opera house between 2002 and 2004. Although stage, lighting and other production aspects of opera houses often make use of the latest technology, traditional opera houses have not used sound reinforcement systems with microphones
Central City Opera House structural changes in 1903. In 1929 a dedicated band of Denver preservationists and music lovers formed the Central City Opera House Association to perform a renovation and re-open the opera house. It was a volunteer-driven effort led by Ida Kruse McFarlane, Edna Chappell and Anne Evans that resulted in an extensive restoration of the Opera House in 1932. In the 1980s and 1990s, the entire structure was restored, including the foundation and replacement of the 1920-era lighting relic by a computerized lighting system. In 1999, wooden chairs were replaced with plush new theater seating. With the 1878 grand opening, Central