By Lehlohonolo Lehana.
Joe Biden is being inaugurated as the 46th President of the United States at the US Capitol's western front. Kamala Harris will be sworn in as his Vice President.
With the coronavirus pandemic raging, the general public is essentially barred from attending the swearing-in, leading to the unprecedented sight of an empty National Mall on inauguration day.
On the Mall's grassy expanse, some 200,000 flags have been planted to represent the absent crowds at the inauguration.
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Meanwhile President Donald Trump left the White House for the last time on Wednesday, skipping the inauguration of successor Joe Biden as the 46th US president in an extraordinary break with tradition.
Drawing a curtain on the most tumultuous administration of modern times, Trump is being ousted by a polar opposite with the Democrat Biden intent on charting a new course to tackle COVID-19 and unite a splintered nation.
A small crowd waved goodbye as Trump, 74, and First Lady Melania Trump walked a short red carpet and boarded the Marine One helicopter shortly after 8:15 am (1315 GMT), for the short flight to the air base where they will continue to Florida on board Air Force One.
"I just want to say goodbye," Trump told the gathering, calling his time in office "the honour of a lifetime".
Trump will be at his Mar-a-Lago resort in Florida when Biden, a 78-year-old former vice president, is sworn in at noon on the US Capitol's western front.
Biden and Vice President-elect Kamala Harris will take the oath of office at the very spot where pro-Trump rioters clashed with police two weeks ago before storming Congress in a deadly insurrection.
While a transition of power will occur much as it has for more than two centuries, this inauguration is unlike any other.
Official Washington has taken on the dystopian look of an armed camp, protected by some 25,000 National Guard troops tasked with preventing any repeat of this month's attack.
And with the pandemic raging, the general public is essentially barred from attending the swearing-in, leading to the unprecedented sight of an empty National Mall on Inauguration Day.
With the death toll soaring past 400,000, Biden on Tuesday led a powerful tribute to victims of COVID-19 as he arrived in Washington.
"It's hard sometimes to remember, but that's how we heal. It's important to do that as a nation," Biden said in sombre remarks in front of the Lincoln Memorial, once more stressing the need to unite the country after Trump's chaos.