French President Emmanuel Macron on Monday said the fire consuming Notre Dame Cathedral is taking part of everyone in France with it.
Macron tweeted after the blaze broke out in the cathedral's spire on Monday he was sad to see "a part of us being on fire."
He extended "thoughts for all the Catholics and all the French."
His administration says Macron is heading to Notre Dame.
A cathedral spokesperson said the entire wooden interior of the Notre Dame is burning and likely to be destroyed.
Footage showed firefighters working to extinguish the fire.