St. Mary's Cathedral is the largest Catholic Church in the Southern Hemisphere and the largest and oldest religious building in Australia. Founded in 1821, the Gothic style is the architectural legacy of medieval cathedrals in Europe. The cathedral is 107 meters long, the width of the hall is 24.3 meters, the ceiling is 22.5 meters high, the central tower is 46.3 meters high, and the height of the front tower and minaret is 74.6 meters. The church is magnificent in appearance and solemn in interior.