The next US President is entering the White House amid controversy over allegations that Russia ordered the hacking of the US election.
But the ongoing furore will be put aside for a day of pomp, pageantry and celebration to mark the next President's inauguration on Friday.
Mr Trump's team has rejected claims that it struggled to find performers, saying the event is 'about the people', not celebrities.
When is Donald Trump’s inauguration?
Mr Trump will be sworn in as US President during a ceremony at noon local time (5pm GMT) at the US Capitol Building in Washington.
The swearing-in ceremony is due to begin with opening remarks at 11.30am (4.30pm GMT). After the oath, Mr Trump will give an inaugural speech.
Singer Jackie Evancho and The Mormon Tabernacle Choir are set to perform at the inauguration ceremony.
Before the inauguration, Mr Trump will meet Mr Obama at the White House at 9.30am (2.30pm GMT) before travelling down Pennsylvania Avenue to the Capitol.
The stage being prepared ahead of the inauguration at the US Capitol Building
After the inauguration, there will be an inaugural parade from the Capitol Building, down Pennsylvania Avenue, back to the White House.
The New York City Rockettes are among the groups and bands that will take part in the parade.
Last night rock band 3 Doors Down, country singer Toby Keith and other musicians will take part in a celebration at the Lincoln Memorial.
The Mormon Tabernacle Choir, Jackie Evancho and the Rockettes will perform at the inauguration
How to watch Donald Trump’s inauguration in the UK
BBC One will begin its live coverage of the inauguration at 4pm GMT with Katty Kay reporting from the Capitol.
Huw Edwards and Sophie Raworth will present President Trump: The Inauguration, which will also be shown on the BBC News channel.
Sky News will cover Mr Trump’s inauguration from 3pm GMT, while Sky Atlantic coverage begins at 4pm. You can watch Sky News online here.
People in the UK, America and around the world can also live stream Mr Trump’s speech on the Right Side website.