Queen makes history by becoming first British monarch to celebrate Platinum Jubilee

Queen Elizabeth has achieved a milestone that no other British monarch has, as she celebrated 70 years on the throne on Monday.

As crowds gathered to mark her historic reign, the Queen spent the day quietly at home doing what she does best, getting on with the job. 

The Queen was reading a book of well wishes, which were sent from far and wide - including US President Joe Biden.

But on Monday the kind words didn't stop at Presidents and Prime Ministers, with people throughout the UK sending their special messages to the Queen.

The kind words only stopped when they failed to do Queen Elizabeth justice.

"She's just, wow, there are no words for her, she's just fantastic isn't she," one person in London told Newshub.

Her longevity is unrivalled.

"She's a tremendous anchor for the commonwealth," Royal commentator Dickie Arbiter said.

No British monarch has ever reigned for this long and while Elizabeth was never meant to inherit the crown, it's hard to imagine the Royal Family without her standing at the centre of it.

As Queen, she has ruled alongside 14 US Presidents, 14 UK Prime Ministers and she's survived scandals, fires, family rifts and a momentous shift in the role of royals in the world. 

And while 70 years in, her health has been a recent cause for concern but this weekend she has revelled in the milestone.  

"She looked in good form, considering she's 95," Arbiter said. "She was in high spirits, and when she smiles, the whole room lights up and I thought brilliant."

While the jubilee has been celebrated across the UK on Sunday (UK time), the Queen has spent it quietly and privately in Sandringham - commemorating the death of her father King George the 6th on this day 70 years ago. 

But with party plans sprinkled over the next four months, the Queen is expected to join in on the country's jubilation.

"She wants to travel the country. She's always said, 'I have to be seen to be believed', and she wants to be seen," Arbiter said. 

The future King - Prince Charles - led Sunday's tributes, celebrating "the service of the Queen, by whose example we will continue to be led in the years to come".

That hope - that there will be many years to come - was shared.

For now, the Queen continues as she always has: getting on with the job, with her state papers in front of her and her father watching over her shoulder. 

Watch the full story above.