WATCH| Circa's coverage of the festivities and protests in Washington, D.C.
UPDATE 11:15 p.m.:
President Donald Trump and First Lady Melania Trump took part in a tradition dance and cake-cutting with members of the U.S. military.
President Trump danced with U.S. Navy Petty Officer 2nd Class Catherine Cartmell of Newport, Rhode Island and the First Lady danced with U.S. Army Staff Sgt. Jose A. Medina of Ponce, Puerto Rico. Vice President Mike Pence and his wife, Karen, also danced with members of the military.
The Trumps and Pences also participated in the military's traditional cake cutting, which is done with a saber. The traditional cake cutting honors the sacrifice and service of its members.
Mrs. Trump said, "Thank you all for your service. I'm honored to be your first lady."
The first couple danced to "I Will Always Love You."
UPDATE 9:41 p.m.:
President Trump and First Lady Melania Trump took to the dance floor at the Liberty Ball. They danced to "My Way" by Frank Sinatra.
Mrs. Trump flaunted an ivory dress while Mrs. Pence donned a cobalt blue gown.
Trump's family, minus Barron, then joined the two couples on stage to dance.
UPDATE 9:33 p.m.:
More than six police officers were injured and 217 protesters were arrested following protests near Donald Trump's 58th inauguration ceremony, CNN reported.
At least two DC police officers and one other person were hospitalized, DC Fire Spokesman Vito Maggiolo said.
UPDATE 4:52 p.m.: A Fox News crew car was reportedly lit on fire.
Other observers noted many empty seats along the parade route.
Protesters are still on the street in huge numbers.
One protester was pepper-sprayed in front of The Washington Post headquarters.
Hi everybody! Back to the original handle. Is this thing still on? Michelle and I are off on a quick vacation, then we’ll get back to work.— Barack Obama (@BarackObama) January 20, 2017
Meanwhile, former President Obama has resumed tweeting from his personal account.
UPDATE 4:30 p.m.: Trump and his family have left the motorcade near the Treasury Department as he walks the last stretch to the White House.
UPDATE 4:23 p.m.: Protesters have lit a limo on fire on K Street in D.C.
Here's a look at the blaze.
UPDATE 4:19 p.m.: Final numbers haven't come in yet, but the crowds at Trump's inauguration were dwarfed by Obama's in 2009.
UPDATE 4:12 p.m.: The inaugural parade came to a halt to allow Trump to exit his car, roughly a block from Trump International Hotel. He and his family got back in the motorcade shortly after.
UPDATE 3:59 p.m.: The parade is well underway.
Protesters near on the parade route blasted music.
UPDATE 3:52 p.m.: Former Vice President Joe Biden arrived in Delaware to raucous applause. Biden took an Amtrak train, hearkening to his roots.
UPDATE 3:45 p.m.: D.C. Mayor Muriel Bowser condemned the violent protests.
UPDATE 3:29 p.m.: Trump left the Capitol for the pre-parade review of troops.
But protests continued nearby.
UPDATE 3:18 p.m.
There's nothing more I can say...They're great people.
UPDATE 3:02 p.m.: Congressional leaders toasted Trump at post-luncheon ceremony.
After that toast, Trump led a standing ovation for Bill and Hillary Clintons.
UPDATE 2:53 p.m.: Here's a look at a fire on K Street.
UPDATE 2:48 p.m.: Here's the latest AP photos of the chaotic protests.
UPDATE 2:25 p.m.:
Sinclair's affiliate WJLA reported that one of its photographers has been injured during a protest that occurred earlier this morning. The woman has been identified as Vanessa Koolhof.
Images on social media show an older woman grimacing in a blue jacket being hauled off by police.
She was reportedly "knocked down."
UPDATE 2:04 p.m.: Protesters grabbed magazine racks and threw them along K Street in Washington, D.C. It's several blocks from the parade route.
CNN reports at least 90 people have been arrested today. Video showed flash-bang grenades being used to break up the crowds.
12th and L, teargas and rubber bullets being fired on the crowd— Andrew Flanagan (@philouza) January 20, 2017
Some witnesses reported tear gas has been used.
More arrests are being made.
WATCH | Here's our live look at the inauguration.
UPDATE 1:54 p.m.: Just as former President Obama departed “Executive One” to begin his life as a private citizen, former Vice President Joe Biden made his way back to Delaware the only way he knows how: via Amtrak train.
Throughout the past eight years, Biden became known for his frequent train travels, a display of commitment to his humble roots. CBS News’ Mark Knoller, who has tracked and recorded every seamless White House activity, estimated that Biden took nearly 8,200 round trips throughout his political career.
Taking his "A" train home to Delaware is a way of life for Joe Biden. He said he's made 8,200 round-trips during his political career.— Mark Knoller (@markknoller) January 20, 2017
Biden walked alongside Dr. Jill Biden.
After eight years in the White House, the Bidens are headed home.
UPDATE 1:42 p.m.: There were plenty of protests at Trump's inauguration. And many of them were civil.
UPDATE 1:10 p.m.: Obama delivered a speech to former staffers at Joint Base Andrews
"Yes we did. Yes we can. God Bless America," Obama said as his speech ended.
Meanwhile, Trump signed executive orders in the U.S. Statuary Hall, officially nominating his new Cabinet.
UPDATE 1:05. p.m.: Obama has arrived at Joint Base Andrews.
Meanwhile, Trump's arrival is awaited in the U.S. Statuary Hall.
Today we are not merely transferring power from one Administration to another, or from one party to another – but we are transferring...— Donald J. Trump (@realDonaldTrump) January 20, 2017
UPDATE 12:54 p.m.: Here's Trump's first tweetstorm as president.
It's all quotes from his speech.
What truly matters is not which party controls our government, but whether our government is controlled by the people.— Donald J. Trump (@realDonaldTrump) January 20, 2017
January 20th 2017, will be remembered as the day the people became the rulers of this nation again.— Donald J. Trump (@realDonaldTrump) January 20, 2017
We will bring back our jobs. We will bring back our borders. We will bring back our wealth - and we will bring back our dreams!— Donald J. Trump (@realDonaldTrump) January 20, 2017
UPDATE 12:45 p.m.: The Obamas have left for Joint Base Andrews.
UPDATE 12:19 p.m.: Trump's speech lasted less than 15 minutes before prayers from religious leaders resumed, including Rabbi Marvin Hier, The Rev. Franklin Graham and Bishop Wayne T. Jackson.
Jackie Evancho then sang the national anthem, and the newly sworn-in President Trump left the Capitol.
UPDATE 12:10 p.m.: Trump's Twitter bio has already been updated.
UPDATE 12:00 p.m.: Donald Trump has been sworn in as President of the United States.
UPDATE 11:48 a.m.: Senate Minority Leader Chuck Schumer then took the stage, saying despite the challenges facing the nation, he was "confident" those problems would be solved.
UPDATE 11:37 a.m. : The inaugural address opened with series of prayers from Cardinal Timothy Dolan, The Rev. Samuel Rodriguez, and Pastor Paula White, as well as a musical performance from the Missouri State University Chorale.
UPDATE 11:31 a.m.: President-elect Trump has arrived on stage, after his family.
The crowd started chanting "Trump! Trump! Trump" before he arrived.
When Hillary Clinton was shown on a main video screen, some in the crowd booed and chanted, "Lock her up!" Sen. Bernie Sanders and Rep. Nancy Pelosi were also booed. The loudest applause went to former President George W. Bush.
UPDATE 11:02 a.m.: The Obama and Trump motorcade has arrived at the Capitol.
Meanwhile, a reporter was thrown to the ground by police.
UPDATE 10:48 a.m.: Protesters broke the window of a nearby Bank of America.
UPDATE 10:35 a.m. EST: Here is the oath of office that Trump will repeat as he is sworn in as president.
"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States."
Dignitaries have been filling in as the swearing-in approaches, including former Presidents Bill Clinton, Jimmy Carter and George W. Bush.
Here's a look at what our reporters have been able to capture.
UPDATE 10:18 a.m. EST: Fantom Comics at DuPont Circle declared its store a safe space for protesters.
UPDATE 10:11 a.m. EST: Some of the protests have been very civil.
Others have not.
UPDATE 10:01 a.m. EST: Protesters have blocked an entrance to the National Mall.
Protesters have locked arms and sat on the ground.
UPDATE 9:49 a.m. EST: A group of pro-Trump bikers hit the streets.
UPDATE 9:43 a.m. EST:
Obama, Trump and their respective wives have met at the White House for a traditional tea and coffee.
UPDATE 9:30 a.m. EST:
President Obama has left the Oval Office for the last time. As he left, he was asked if he had any final words for the American people.
"Thank you," he responded.
Trump has left church for the White House, where he, Obama and their respective wives will drink tea and coffee together as per tradition.
WATCH | Here's Obama's last walk from the Oval Office.
WATCH | We got a look at pro-marijuana activists passing out joints to a huge crowd.
UPDATE 9:30 a.m. EST: Here's a group of the protesters with an unofficial mascot.
It's been the honor of my life to serve you. You made me a better leader and a better man.— President Obama (@POTUS44) January 20, 2017
These may be Barack Obama's last tweets as President.
I won't stop; I'll be right there with you as a citizen, inspired by your voices of truth and justice, good humor, and love.— President Obama (@POTUS44) January 20, 2017
I'm still asking you to believe - not in my ability to bring about change, but in yours. I believe in change because I believe in you.— President Obama (@POTUS44) January 20, 2017
WATCH | Protesters are chanting in English and Spanish near E and 12th streets.
UPDATE 8:43 a.m. EST: Protesters have brought three alpacas along with them.
Trump has been forced to surrender his trusty Samsung Galaxy for a secure, Secret Service-approved phone, according to The Associated Press.
His new phone has a number that few people will be able to access, The New York Times reports.
UPDATE 8:18 a.m.: Trump will hear the Rev. Robert Jeffress deliver a sermon at a church service Friday morning, CNN reports.
Jeffress is a staunch Trump supporter who runs First Baptist Church in Dallas.
He drew controversy during the 2012 campaign, telling evangelicals not to vote for Mitt Romney because he was a Mormon, calling that religion a "cult." He has also said Islam is "from the pit of hell" and that President Obama "paved the way" for the Antichrist.
Jeffress announced the sermon Thursday night.
UPDATE 8:16 a.m.: More protesters took to the street.
UPDATE 7:52 a.m.: Protesters chanted "Refugees are welcome here."
UPDATE 7:32 a.m.: Our reporter Emily Atkin is through security. Here's the scene.
It all begins today! I will see you at 11:00 A.M. for the swearing-in. THE MOVEMENT CONTINUES - THE WORK BEGINS!— Donald J. Trump (@realDonaldTrump) January 20, 2017
Here's Trump's first Inauguration Day tweet.
UPDATE 7:29 a.m.: This is the sunrise over the White House. This is not photoshopped.
UPDATE 7:12 a.m.: Power issues delayed the opening of some gates into the city..
UPDATE 6:17 a.m.: Trump supporters sang "Amazing Grace" at a security checkpoint.
UPDATE 6:14 a.m. Here's a look at anti-Trump protests taking place around the world, including the United Kingdom, the Philippines and South Korea.
UPDATE 6:02 a.m.: Some gathered in the early morning to honor outgoing President Obama.
UPDATE JAN. 20 5:39 a.m.:
Inauguration Day has arrived after a night full of protests in America's capital and around the world. The " Deploraball" in Washington, D.C. led to multiple protests.
One protester burned a "Make America Great Again" hat.
Another observer said chemical weapons were deployed.
Thousands are expected to flock to the Nation's capital to celebrate--and protest- the inauguration of the 45th president of the United States, Donald J. Trump.
Inaugural celebrations kicked off on Thursday evening, but there's plenty more to come around.
Protestors | Friday, Jan. 20 at 8 a.m. EST:
Protestors are getting an early start to the day. A pro-pot group, D.C. Cannabis Coalition, is giving away thousands of marijuana joints to promote the drug's legalization at the federal level. Pro-marijuana activists fear that Trump's pick for attorney general, Jeff Sessions, will nix legalization efforts.
Prayer service | Friday, Jan. 20 at 8:30 a.m. EST:
While protesters begin to gather near Dupont Circle in downtown D.C., Trump and his family will attend a religious service at St. John's Episcopal Church
Morning tea at the White House | Friday, Jan. 20 at 9:30 a.m. EST:
It's presidential tradition to welcome the new first family into the White House with coffee and tea. Following the gathering, the 44th and 45th president will ride down Pennsylvania Avenue to the Capitol.
National anthem | Friday Jan. 20 around 11 a.m. EST:
Despite growing criticism over her decision to partake in Trump's inauguration, 16-year-old Jackie Evancho will sing the national anthem.
The former "America's Got Talent" shared backstage moments from rehearsals.
She commented on the "amazing view" from the Capitol building.
"I'm here!" she wrote on Instagram.
Swearing in | Friday, Jan. 20 at 11:30 a.m. EST:
The swearing-in ceremony begins. Supreme Court Chief Justice John Roberts will administer the oath of offie around noon on the steps of the U.S. Capitol.
Vice president-elect Mike Pence will take the oath of office with a Bible once used by former President Reagan, according to the inaugural committee. Associate Justice Clarence Thomas will administer the oath, becoming the first African American in history to conduct the oath to either a president or vice president.
Inaugural speech | Friday, Jan. 20 at noon EST:
Officially the 45th president of the United States, Trump will deliver his first speech as commander-in-chief.
He shared a photo of himself on Twitter earlier this week showing him writing the inaugural speech back at his Mar-a-Lago residence.
Inaugural parade | Friday, Jan. 20 at 3 p.m. EST:
Trump and Mike Pence will lead the inaugural parade down Pennsylvania Avenue until they reach the White House, where they'll watch the remainder of the parade from a reviewing stand.
The parade will feature more than 8,000 participants, including the Talladega College Band and the Girl Scouts.
Inaugural balls | Friday, Jan. 20 at 7 p.m. EST:
Two inaugural balls will take place at the Walter E. Washington Convention Center. The Armed Services Ball will be held at the National Building Museum.
Trump is expected to make an appearance as well as dance at all three.
National Prayer Service | Saturday, Jan. 21 at 10 a.m. EST:
The prayer service at the Washington National Cathedral officially marks the end of the inauguration celebrations.
The Women's March on Washington | Saturday, Jan. 21 at 10 a.m. EST:
As Trump, Pence and their families reflect on the events that have occurred, thousands of protestors from across the country are expected to begin their march at the base of Capitol Hill.
Several celebrities are expected to walk in solidarity with protestors. Expect to see people like America Ferrera, Cher, Scarlett Johansson, Julianne Moore, Olivia Wilde and many more at the event.
Whatever happens at Donald Trump's inaugural ceremony, he won't be able to lay claim to these historic firsts.