A mourner in Sydney has recalled the Queen's words that "grief is the price that we pay for love" as he attended St Andrews Cathedral to watch a live telecast of her funeral in London.
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The cathedral, along with Government House in Canberra and Federation Square in Melbourne were among venues that hosted viewings on Monday night.
The cathedral held solemn choral hymns for 90 minutes before the funeral, which was projected onto a large screen inside.
"My mother is English, so I guess we're part of a royalist family, with that allegiance," Matt Palmer told AAP as he arrived at the service.
After watching royal weddings at home, Mr Palmer said he wanted to farewell the Queen at St Andrew's as a way of paying tribute to her faith
"I've been crying for the last 10 days, and I'll cry tonight as well," mourner Simon Perdriau said.
"As Elizabeth herself said, grief is the price that we pay for love."
Mourner Michelle Raft said the Sydney cathedral was a fitting place to farewell the Queen, who visited the church in 1954.
"I like the idea that she's been here and that we'll honour her together," Ms Raft said.
Melbourne's landmarks will remain lit until a national memorial service on Thursday, with bagpipes sounding in Perth in the late monarch's honour.
Prime Minister Anthony Albanese is among more than 2000 people attending the funeral in London, along with the governor-general and a small delegation of Australians.
Mr Albanese wore a suit by M.J. Bale, while his partner Jodie Haydon wore a dress by Karen Gee and a hat by Jane Lambert.
He was among the estimated crowd of 750,000 people who viewed Queen Elizabeth's coffin in Westminster Hall ahead of her state funeral.
The funeral will take place at Westminster Abbey at 8pm AEST before a committal service is held at St George's Chapel in Windsor.
The service will be led by the Dean of Westminster, Dr David Hoyle, with British Prime Minister Liz Truss reading the second lesson and Archbishop of Canterbury Justin Welby delivering the sermon.
The Last Post will be sounded as the service comes to a close, followed by a two-minute silence and the Reveille.
The Sovereign's Piper of the Royal Regiment of Scotland will play Sleep Dearie Sleep as the coffin and processions leave the church.
Ahead of the event, Mr Albanese met with Canadian Prime Minister Justin Trudeau on Sunday before holding a lunch with Australia's community champions at Australia House in London.
He also met King Charles III at Buckingham Palace along with his counterparts from the 14 Commonwealth realms as well as Ms Truss in Kent on Saturday.
The prime minister described his meeting with the King as warm and friendly, saying it provided him a moment to personally offer his condolences.
"It's a very personal bereavement that he's feeling," Mr Albanese told the BBC.
Australians will be able to pay their respects on Thursday during the memorial service to be broadcast across the nation from Parliament House.
All state and territory leaders, as well as justices of the High Court, will attend the service, with Australians given a public holiday to mark the occasion.
Mr Albanese said he and Opposition Leader Peter Dutton would give short tributes to the late monarch.
Australian Associated Press
