The Paris fire brigade spokesman says Notre Dame Cathedral has been secured and firefighters will leave the site on Friday night.
Lt. Colonel Gabriel Plus told The Associated Press that "there is no more risk the edifice's walls could fall down."
He added that firefighters have been able to cool down the cathedral's walls and the debris from the roof that fell inside the cathedral.
Plus said "It's a miracle that both chapels on the side and the crypt remain untouched."
The cathedral in the heart of Paris was devastated by a fire Monday evening that raced through its massive wooden roof. Firefighters have been credited with preventing the building from burning to the ground in a "chain-reaction collapse" by aggressively protecting the wooden supports in its twin medieval bell towers from the flames.
Meanwhile, rebuilding the 800-year-old Paris cathedral will cost billions of dollars as architects, historians and artisans work to preserve the medieval landmark.
But little of the money will come from insurance companies.
Notre Dame and all of its pre-1905 artworks are the property of the French state and not insured. The French government is responsible for costs like restoration and rebuilding.
Unique forms of property, like monuments or religious relics, are hard to value. How do you put a price tag on sentiment, history and international renown?
"A small number of specialized insurers, notably Lloyd's of London, are often willing to accept the risk of undertaking such valuations, but the resulting premiums are very high," says Bruce Huber, professor of law at the University of Notre Dame in Indiana.
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