Stirring renditions of "La Marseillaise" rang out from Dublin to New York as global landmarks were bathed in the French colours and thousands marched in solidarity with Paris after attacks that at least 129 dead.
Monuments from the Sydney Opera House in Australia to One World Trade Center in New York yesterday were adorned with France's red, white and blue, while the "Peace for Paris" symbol combining the city's beloved Eiffel Tower with the peace sign of the 1960s went viral online.
New York's Metropolitan Opera led by star tenor Placido Domingo mourned the nearly 130 victims of France's worst-ever such attacks with an unscheduled performance of the distinctive French national anthem.
Many of the 6,000 participants in a march in the Irish capital were draped in the French blue, white and red flag, while others also sang the national anthem.
London paid homage to the victims with some two thousand people gathering at an evening vigil in the capital's Trafalgar Square, where fountains and the grand portico of the National Gallery opposite were lit to resemble the Tricolour.
Earlier braving the afternoon rain, around 150 people displayed flags and home-made placards reading "Nous sommes Paris" (We are Paris) and "London stands with Paris".
The Eiffel Tower, the symbol of the so-called city of light, was however shrouded in darkness and would remain closed "until further notice", a spokeswoman told AFP.
Bouquets, candles and messages of condolence were laid at French embassies worldwide.
A Twitter campaign has begun encouraging notoriously tribal England football fans to join with French travelling supporters in singing "La Marsellaise" before the kick-off in the friendly match between both countries.
The European Union called for a minute's silence to be held on Monday for the victims of the attacks.
In Madrid and Barcelona, hundreds stood for a minute's silence outside city hall.
