Erected a diocese on 28 October 1925 by Pope Pius XI by the bull Vixdum Poloniae unitas. Erected an archdiocese on 25 March 1992 by Pope John Paul II by the bull Totus Tuus Poloniae populus. The capital of the archdiocese is Katowice with the Archdiocesan Cathedral of Christ the King. The patron saints of the archdiocese are: Our Lady of Piekary, Mother of Justice and Social Charity, St. Florian, martyr, and St. Barbara, virgin and martyr.