Built in 1846 at boulevard Émile Jacqmain 20, the Al-hambra, with 2,000 seats, was Belgium's largest theater in the inter-war years. Major entertainers performed here, including Josephine Baker and Maurice Chevalier, and, on 24 January 1920, Mitchell's Jazz Kings gave the first jazz concert in Belgium. On 21 January 1918, the Council of Flanders, a grouping of radical advocates of Flemish rights, met at the Alhambra and declared independence for Flanders, a move that carried no effect. Following World War II the building proved too old and overly large. It was demolished in 1974.
Historical Dictionary of Brussels. Paul F. State.