15/11/2015 2:14 PM AEDT | Updated 15/07/2016 12:51 PM AEST

As Paris Mourns, World Stands In Solidarity

Anadolu Agency via Getty Images
LONDON, ENGLAND - NOVEMBER 14: The National Portrait Gallery lit up in the colours of the French national flag during a vigil to pay respect to the victims of France terror attacks, at Trafalgar Square, London on November 14, 2015. At least 129 people were killed and 352 others injured -- 99 of them in critical condition -- after the terror attacks in Paris on 13 November. (Photo by Tayfun Salci/Anadolu Agency/Getty Images)

Cities across the world have held vigils to mourn the deaths of more than one hundred people killed in terrorist attacks across Paris on Friday night.

In the city itself, hundreds of Parisians met to lay flowers, light candles, and leave messages for the dead or injured.

The death toll is confirmed at 129 dead while 352 more are injured, 99 of those critically, after simultaneous terrorist attacks hit the nation's capital.

It’s the second time this year those in the French capital have been left reeling -- with the attack at the Charlie Hebdo magazine’s Paris office in January killing 11.

"I have some friends of friends who were shot entering this catastrophic situation," Julie Furlan, 35, who lives in the Bastille neighborhood, told The Huffington Post.

"I come here to pray even if I don't trust in any god."

In New York, hundreds gathered across the city to mourn. Many gathered in LOVE Park and Washington Square Park, where NYC officials hung a French flag under the Washington arch and the crowd sang the French national anthem.

“There’s a lot of sadness, a lot of anger, and a feeling of helplessness,” Valerie L’Huiller, 50, from Paris and at the gathering, told HuffPost.

“It could happen anywhere, unfortunately it happened in France.”

Londoners stood shoulder-to-shoulder as they gathered in their thousands to remember the fallen and show solidarity with Paris.

The tricolour was projected onto the facade of the National Gallery, while the crowd held mobile phones and lighters aloft.

And in Brazil, the city’s iconic Christ the Redeemer statue was lit in the colours of the French flag.

Back home, the Sydney Opera House headlined a list of iconic Australian landmarks that shone blue, white and red on Saturday evening as our nation united in the face of the tragic terrorist attacks in Paris.

In Sydney’s Martin Place, hundreds came together to remember the victims.

Gildas Olympia, 32, originally from France but living in Sydney, told the Sydney Morning Herald the news of the attacks stunned him.

"I didn't believe it was real. It was so crazy. I used to live in the same district as the attack, so I was really shocked. I'm still shocked, actually," he said.

On Sunday, the tricolour was flying at the top of the Sydney Harbour Bridge alongside the Australian flag, as NSW Premier Mike Baird shared on Facebook.

Solidarité. 🇦