Mark this day! Queen Elizabeth and husband Prince Philip celebrate their platinum wedding anniversary on Monday. The prince, 96, and the queen, 91, are the first British monarchs to reach 70 years together.
They will be celebrating this day with a private party at Windsor Castle, the monarch’s home to the west of London.
Also, to commemorate the occasion, they've released a new series of portraits captured by British photographer Matt Holyoak at Windsor Castle earlier this month.
Here are five interesting facts about the couple:
Queen Elizabeth II and Prince Philip are actually second cousins
It was in 1934 that the future couple were first introduced at the wedding of Philip's cousin Princess Marina of Greece and Denmark to Prince George, Duke of Kent (Elizabeth's uncle).
Philip and Elizabeth's engagement was officially announced in July 1947.
Prince Philip and Queen Elizabeth II tied the knot at Westminster Abbey on Nov. 20, 1947.
Elizabeth gave birth to the couple's first child, Prince Charles, on Nov. 14, 1948, almost a year to the day of their wedding. Their welcomed a daughter, Princess Anne, two years later.