The fire broke out at around 6pm last night and was declared to be "fully extinguished" more than 12 hours later.
Here's your guide to the key events that unfolded.
9.00 - French billionaires pledge support
French billionaire Francois-Henri Pinault announced he would donate £86 million to help repair and rebuild the cathedral.
The businessman, who is married to the actress Salma Hayek, said he expects others to follow suit as "it has to be a collective endeavour" to renovate the Parisian landmark.
Shortly after his announcement, fellow businessman Bernard Arnault offered £173 million to help reconstruct the "symbol of France".
8.45 - Fire 'fully extinguished'
Firefighters confirmed they have fully extinguished the fire at the 850-year-old cathedral.
Just under 400 firefighters tackled the blaze throughout the night, battling to stop it wreaking complete destruction of the treasured facade.
Two police officers and one firefighter were injured during the blaze.
11.26 - Confirmation that several 'priceless' artefacts saved
Paris mayor Anne Hidalgo confirmed several of the most sacred artefacts at the cathedral had been saved, while culture minister Franck Riester said others were being held under lock and key at the city hall.
Among the artefacts are a crown of thorns, which was brought to Paris in 1238 by French King Louis IX, and an organ dating back to the 1700s which has nearly 8,000 pipes.
April 15, 21.40 - Parisians sing and pray
Crowds gathered in Paris to sing hymns and pray as the cathedral burned.
Social media users captured crowds singing Ave Maria whilst watching the blaze from afar.
April 15, 19.05 - Main spire collapses
Part of the catherdral's main spire collapses amid the raging fire.
A church spokesman told French media that all of Notre Dame Cathedral's frame was burning after the spire collapsed.
April 15, 17.50 - Reports emerge of smoke
Reports begin to emerge of smoke coming from the building. The last visitors of the day are evacuated and the Paris Fire Brigade begin to fight flames emerging from the cathedral's roof.