Paris Fire brigade members spray water onto the facade of the Notre Dame Cathedral during the visit by French President Emmanuel Macron (not pictured) in Paris, France, April 15, 2019.

French President Emmanuel Macron addresses the French nation following a massive fire at Notre Dame Cathedral, at the Elysee Palace in Paris, France, 16 April 2019. Yoan Valat/Pool via REUTERS

French President Emmanuel Macron speaks as Prime Minister Edouard Philippe and Archbishop of Paris, Michel Aupetit, stand near the Notre Dame Cathedral where a fire burns in Paris, France, April 15, 2019.

French President Emmanuel Macron and Prime Minister Edouard Philippe react as they watch the fire at the Notre Dame Cathedral as its burns in Paris, France, April 15, 2019.

French Prime Minister Edouard Philippe, Minister of Culture Franck Riester and French President Emmanuel Macron gather near the Notre Dame Cathedral as its burns in Paris, France, April 15, 2019.

Paris Fire brigade members spray water onto the facade of the Notre Dame Cathedral ahead of the visit by French President Emmanuel Macron (not pictured) in Paris, France, April 15, 2019.

French President Emmanuel Macron and his wife Brigitte walk outside the Notre Dame Cathedral where a fire continues to burn in Paris, France, April 16, 2019.

French President Emmanuel Macron sits at his desk after addressing the French nation following a massive fire at Notre Dame Cathedral, at the Elysee Palace in Paris, France, 16 April 2019.