Proposed to be one of France's most ambitious project in Indochina at the time, Rev. Colombert laid the cornerstone for the cathedral on October 7, 1877. Three years later, in 1880, the cathedral was opened to the public. These two dates are inscribed on a marble placard in the cathedral.The bricks used to build the structure were shipped from Marseilles. Artisans from Lorin Company (Chartres, France) were commissioned to create the stained glass windows. The cost of construction was a whopping 2.5 million francs. In 1962, the Vatican gave the cathedral the title Basilique.