The Queen's final journey after her state funeral later today will her see her taken to be reunited with Prince Philip.
The late monarch will be placed next to the Duke of Edinburgh in the royal vault of St George's Chapel in Windsor.
The burial chamber is located 16ft down and is usually hidden by black and white diamond tiles.
It will be opened on Monday for the Queen's oak coffin to be lowered into, but that will not be the final resting place for the Queen or her husband.
A private ceremony will be held later this evening, with senior royals set to attend as the couple – who were married for nearly 74 years before the Duke's death at the age of 99 last April – are interred in the King George VI memorial chapel.
The Sun reports that the Queen made Windsor Castle her main residence following Philip's death, so as to be near to him.
On Monday they will be laid side by side in the tiny memorial chapel, where the Queen's father George VI and her mother Elizabeth, The Queen Mother, and sister Princess Margaret are interred.
While royals have tended to be laid to rest in Windsor in recent times, they were traditionally buried at Westminster Abbey.
The tombs of St Edward the Confessor, Richard III, Henry V, Elizabeth I and Mary Queen of Scots are all buried within Westminster Abbey.
However, there has not been a monarch's funeral there since 1760, with the ceremonies having been held at St George’s Chapel for almost 300 years.
The UK’s longest-reigning monarch is said to have wanted to break with three centuries of tradition for her own.
She decided that her funeral should instead be held at Westminster Abbey — the first time that will have happened since King George II in the mid-18th century.
The Queen is understood to have played an active role in arranging the details of her final send-off, with planning for the state funeral starting way back in the 1960s.
The 96-year-old is said to have felt Westminster Abbey was a more suitable location for the nation’s farewell.
The historic cathedral can hold a congregation of 2,000 mourners, compared with 800 at St George's Chapel.
Queen Victoria and Prince Albert were laid to rest in the Royal Mausoleum at Frogmore in Windsor Great Park, about half a mile from Windsor Castle.
The George VI memorial chapel was commissioned by his daughter the Queen, whose father was moved there 17 years after his death when it was completed in 1969.
