The French president praises the cathedral's restoration with the building set to open to the public on 7 December.

Macron was welcomed inside by the chief architect of France’s national monuments, shown sacred objects that survived the fire and given explanations of how areas such as the roof and window were remade. The BBC’s Paris Correspondent wrote that it had been a “spectacular experience.”

French President Emmanuel Macron has told workers who revived Paris' iconic, fire-ravaged Notre Dame cathedral, that they "achieved what was thought impossible."