Australia lights up in red, white and blue for France

The Sydney Opera House, the MCG and other Australian icons have been lit up in red, white and blue and hundreds of people held a vigil in Martin Place as prominent buildings around the world show solidarity following the Paris terror attacks.

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Two church services will also be held in Sydney to remember the scores of victims killed in the unprecedented attacks.

St Andrews Cathedral will hold a prayer vigil at 3pm on Sunday, while a memorial service will be held at St Marys Cathedral at 6.30pm on Monday, NSW Premier Mike Baird has announced.

Mr Baird said he had also asked for a French flag to fly over the Harbour Bridge.

"There isn't one in the country big enough. If we cant find one, we'll make one," he tweeted on Saturday.

NSW Premier Mike Baird was among hundreds of Sydneysiders who gathered in the CBD to show solidarity with the Paris terror attack victims.

The crowd huddled together in silence at Sydney's Martin Place on Saturday evening to remember some of the 120 victims killed in the unprecedented attacks.

Around the world, landmarks were also lit up with the colours of the French flag in support of the attacks.

Auckland's Sky Tower is lit in the blue, white and red colours of the French flag in honour of the victims of the attacks in Paris. Photo: REUTERS/Rafael Ben-Ari

San Francisco City Hall in San Francisco, California. Photo: REUTERS/Stephen Lam

Red, white and blue colours are seen on top of the tower of One World Trade Centre in New York. Photo: Louis Lanzano/AFP

The Angel de la Independencia monument in Mexico City is lit up in blue, white and red, the colours of the French flag, following the Paris terror attacks. Photo: REUTERS/Tomas Bravo