In New York City, the Empire State Building and One World Trade Centre displayed the red, white and blue as state governor Andrew M. Cuomo paid tribute to “the people of France and Catholics worldwide who are mourning this tremendous loss”.
Across the US, San Francisco International Airport, the Rhode Island State House and the Seattle Great Wheel were among the structures illuminated in honour of the cathedral.
In Italy, the dome of the Chapel of the Shroud in Turin and the façade of the Fenice theatre in Venice were floodlit in red, white and blue.
The lookout tower on Petrin hill in the Czech capital Prague and the Stari Most bridge in the Bosnia and Herzegovina city of Mostar were also brightened with the colours of the French flag.
An icon of Ottoman architecture, the bridge in Mostar was completely rebuilt in 2004 after it was destroyed by artillery fire in 1993.
The bells at Westminster Abbey were rung on Tuesday afternoon to mark 24 hours since the fire broke out at Notre Dame, with Theresa May explaining it was done “to underline our solidarity with France and her people”.
The French Bishops’ Conference said that the bells of all cathedrals across the country will ring out at 6:50 pm local time on Wednesday – the time when the fire started on Monday.
The conference said it would show the solidarity of all dioceses and described the Notre Dame fire as “a shock that affects far beyond just the Catholics of our country.”
Austrian president Van der Bellen directed the French flag to be flown over the presidential palace in a sign of solidarity.
Other leading figures shared memories of past visits to the cathedral.
Former president Barack Obama posted an old photo of himself, his wife Michelle and their two daughters lighting candles there and expressed his grief.
Meanwhile, Victor Hugo’s novel The Hunchback of Notre Dame has rocketed to the top of the bestseller list of Amazon in France in its original version.
The English translation of the 1831 novel is also number one in sales in the category of historical fiction.
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