Question: when was st mary's cathedral sydney built
Answer: au History Former name ( s ) St Mary 's Chapel Founded 21 October 1821 ( 1821 - 10 - 21 ) Dedication Immaculate Conception , Mary Help of Christians Dedicated 29 June 1865 ( 1865 - 06 - 29 ) Consecrated 8 September 1882 Relics held First class relic of St Francis Xavier displayed , various others privately held Events Ruined by fire ( 29 June 1865 ( 1865 - 06 - 29 ) ) Past bishop ( s ) George Pell , Edward Clancy , John Bede Polding Architecture Status Minor basilica ( since 1932 ) Cathedral ( since 1835 ) Chapel ( 1821 - 1835 ) National shrine Functional status Active Archite