Crowds gather on the National Mall hours ahead of Swearing-In ceremony

Crowds amid jumbo TV screens line the mall

Spectators climb the General Ulysses S. Grant Memorial for a better view

Another view of crowds on the Nationa Mall

Capitol decorated for inauguration

Congressman Murphy arrives at Capitol steps for inauguration ceremony

President Obama takes the oath of office

Newly sworn in President Obama delivers inauguration speech

44th President salutes the 43rd President as he departs for Texas