Berlin's Brandenburg Gate in Berlin was lit up in Union Jack colours
The lights on the Eiffel Tower were turned off at 11:45pm BST (12:45am local time) in a tribute to the seven victims confirmed so far.
The Brandenburg Gate, the iconic Berlin landmark, was been adorned in the colours of the Union flag.
Morning after London attack: Heightened police presence at Borough Market & Bridge Sun, June 4, 2017
SIX people have been killed after a horrific terror attack targeted London Bridge and Borough Market on Saturday night. These are the pictures are London wakes up to the tragic scenes
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At the request of President Juncker, EU flags flying half-mast in all EU Commission buildings in solidarity with the British people.
The Gate was lit up on Sunday to show solidarity with the British government and to pay tribute to the victims.
Condemning the horrific incident, French president Emmanuel Macron said: “In the face of this new tragedy, France is more than ever at Britain's side. My thoughts go out to the victims and their loved ones.
“France will continue to fight terrorism with all its powers, alongside the United Kingdom and all affected countries.”
Earlier on Sunday, the French embassy also confirmed one of their citizens had been killed in the attack, although further details have not yet been released.
Seven other French nationals were injured, the country's foreign minister confirmed, including four in a serious condition.
German Chancellor Angela Merkel said she was saddened and dismayed by the attack in London on Saturday.
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France switched off the Eiffel Tower's lights in a tribute to the victims
Tributes have already flooded London Bridge, days after seven victims were killed
The British Embassy in Berlin, the Consulate in Istanbul and the Scottish Parliament all lowered their flags to half-mast yesterday.
They were joined by the European Commission headquarters in Brussels, which – at the request of president Jean-Claude Juncker – lowered their flags to half mast in order to express their solidarity with the British people.
London Bridge terror: Scenes as armed police respond Sun, June 4, 2017
At least two people have died after being after reportedly being struck by a van on London Bridge on Saturday night.
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Armed police responding to the incident at London Bridge
In a statement, her grief-stricken family said: “We grieve the loss of our beautiful, loving daughter and sister.
“She had room in her heart for everyone and believed strongly that every person was to be valued and respected.”