President Barack Obama rests his hand on President Lincoln's Inaugural Bible as his wife Michelle Obama holds it as he takes the oath of office. Photo Elise Amendola/AP.
President Barack Obama talks with first lady Michelle Obama during the inaugural parade in Washington. Photo Jae Hong/AP.
Barack Obama, left, takes the oath of office from Chief Justice John Roberts, not seen, as his wife Michelle, holds the Lincoln Bible and daughters Sasha, right and Malia, watch at the US Capitol in Washington. Photo Chuck Kennedy/AP.
Barack Obama, left, takes the oath of office from Chief Justice John Roberts as his wife Michelle, holds the Lincoln Bible and daughters Sasha, right and Malia, watch at the US Capitol in Washington. Photo Susan Walsh/AP.
Members of the media record President Barack Obama and first lady Michelle Obama as they walk on Pennsylvania Avenue in front of the White House in Washington. Photo Jae Hong/AP.
President Barack Obama walks back to the Capitol alongside his wife, Michelle, and Vice President Joe Biden and his wife, Jill. Photo Saul Loeb/AP.
President Bush and first lady Laura Bush welcome President-elect Barack Obama, far left, and his wife Michelle Obama, right, on the North Portico of the White House in Washington. Photo Pablo Martinez Monsivais/AP.
President Barack Obama, left, and his daughter Sasha peer through the windows of the presidential limousine as they are driven down Pennsylvania Avenue to the White House. Photo Haraz N. Ghanbari/AP.
President Barack Obama greets guest after he is sworn-in as the 44th president of the United States. Photo J. Scott Applewhite/AP.
Barack Obama arrives for his inauguration at the US Capitol in Washington. Photo Susan Walsh/AP.
US Army Command Sgt. Maj. Julia Kelley weeps as she watches the inauguration of US President Barack Obama at Camp Liberty in Baghdad, Iraq. Photo Maya Alleruzzo/AP.
Jossie Redmond reacts during the inaugural ceremonies on the National Mall before the swearing-in ceremony of President-elect Barack Obama. Photo Matt Rourke/AP.
President Barack Obama's inauguration speech is displayed in the poker room at the Mirage hotel and casino in Las Vegas. Photo Isaac Brekken/AP.
A bowler bowls at Strike bowling alley in Cupertino, California, as they watch President Barack Obama and First Lady Michelle Obama in the presidential inauguration parade. Photo Paul Sakuma/AP.
More than one million people poured into Washington for Obama's inauguration. Photo AP.
First lady Michelle Obama moves her dress train as she dances with President Barack Obama at the Youth Inaugural Ball in Washington. Photo Charles Dharapak/AP.
President Barack Obama gets caught in first lady Michelle Obama's dress train as they dance at the Commander in Chief Ball at the National Building Museum in Washington. Photo Charles Dharapak/AP.
Vice President Joe Biden arrives with his wife Jill Biden at the Neighborhood Ball on inauguration night in Washington. Photo Gerald Herbert/AP.
The presidential limousine is parked in front of the South Portico of the White House after President Barack Obama and first lady Michelle Obama returned from the inaugural balls in Washington. Photo Charles Dharapak/AP.
Stepping into history, Barack Hussein Obama has grasped the reins of power as America's first black president. Photos from AP.
