Donald Trump officially became the president of the United States on Jan. 20.
Here are the day's most captivating images, from the Obama family welcoming the Trumps to the White House to the violent protests in the streets of Washington.
This story will be updated with more images as the day progresses.
Donald and Melania Trump leave church on the morning of the inauguration.
Thousands of supporters gather in the National Mall to cheer on the new president.
As he waits for his successor to arrive at the White House, Former President Obama kisses his wife Michelle.
The incoming and outgoing first families meet at the White House before the inauguration ceremony.
Former President Obama leaves the White House for the last time as Commander in Chief. President Trump accompanies him on the walk to the presidential limousine.
Police drag a protester away from 14th Street NW in Washington. As of this writing, CNBC reports that at least 95 arrests have been made by law enforcement in response to the protests.
Melania Trump enters her husband's inauguration ceremony, as she gets set to become the first lady of the United States.
Ivanka Trump, Tiffany Trump, Eric Trump and Donald Trump Jr. enter the inauguration ceremony for their father.
Hillary Clinton, the former presidential candidate and Democratic rival of President Trump, arrives with former President Bill Clinton.
Joe Biden greets Melania Trump at the inauguration ceremony outside of the U.S. Capitol.
Michelle Obama and Jill Biden arrive at the Capitol together.
Obama and Biden enter the Capitol for the last time as sitting president and vice president.
Trump enters the stage at the inauguration ceremony.
Mike Pence takes the Oath of Office, becoming the vice president of the United States.
Donald Trump takes the Oath of Office, becoming the president of the United States.
President Trump raises his fist in celebration of his inauguration.
President Trump gives his inaugural address on the West Front of the U.S. Capitol.
Another shot of President Trump delivering his inaugural address, promising to put "America first."
President Trump faces the crowd, celebrating his inauguration.
Melania Trump, Donald Trump, Mike Pence and Karen Pence wave goodbye to Barack and Michelle Obama as the couple departs the Capitol.
Police officers pepper spray anti-Trump protesters before the inauguration.
Two presidents and two first ladies watch the inauguration activities unfold at the U.S. Capitol.
The Obama and Biden families say goodbye before departing from the U.S. Capitol.
The former president boards the presidential helicopter, departing the U.S. Capitol. As Obama is no longer the sitting president, the aircraft no longer receives the "Marine One" call sign reserved for helicopters carrying the sitting president of the United States.
Protesters set fires in the streets of Washington following President Trump's inauguration.