1852: Began as St. Patrick Church, located at 9th and Brazos streets

1866: Name changed to St. Mary of the Immaculate Conception Church

1874: New church construction began at 10th and Brazos streets

1884: Church construction completed
April 20, 1884: New church dedication

Nov. 15, 1947: Church designated a cathedral

April 2, 1973: Building listed in the National Register of Historical Places