World leaders and millions of people from around the globe are mourning the damage wrought by the fire at Notre Dame Cathedral and have expressed solidarity with the French people in the wake of the blaze.
EU Council President Donald Tusk expressed his condolences after the fire broke at the cathedral.
Iranian Foreign Minister Mohammad Javad Zarif also joined in the condolences.
However, some contend that the restoration of the building could take years — the fire damaged parts of the building constructed in the 19th and 13th century.
Former US President Barack Obama said that Notre Dame was one of the world's great treasures.
UK Prime Minister Theresa May also supported the Parisians.
Parisians and tourists alike remained, aghast, in the area of Cite Island, where the cathedral is located. Many of them cried and prayed for the salvation of the symbol of Paris.
TWEET: These moments remind us that our historic buildings are fragile and precious. With all my heart the @PompiersParis who do a great job to save #OurDame
TWEET: A sad day for Europe… The Notre Dame de Paris in flames… # NotreDame #notredamedeParis
The social networks have launched the hashtag #prayfornotredame.
TWEET: I can not believe it. The cathedral, which was under construction for almost 200 years, burned, the roof collapsed, the clock collapsed, and the spire of the tower collapsed. Now in the future history textbooks will shine the date "April 15, 2019", meaning a terrible fire and at the same time the death of the Notre Dame de Paris. #NotreDame
Users from all over the world post photos of the cathedral and also publish their stories and memories related to the "heart of Paris".