The Cathedral Church and Minor Basilica of the Immaculate Mother of God, Help of Christians, Patroness of Australia, locally known as Saint Mary's Cathedral, is a Catholic basilica and the seat of the Archdiocese of Sydney. The cathedral is dedicated to the Blessed Virgin Mary under the venerated title of “Our Lady, Help of Christians" and Patroness of Australia.
Pope Pius XI raised the shrine to the status of Minor Basilica via the Pontifical decree Inter Potiores Sacras on 4 August 1932. Pope Benedict XVI made an Apostolic Visit to the shrine in 19 July 2008.