Modern treasure hunters, led by archaeologist Ben Gates, search for a chest of riches rumored to have been stashed away by George Washington, Thomas Jefferson and Benjamin Franklin during the Revolutionary War. The chest's whereabouts may lie in secret clues embedded in the Constitution and the Declaration of Independence, and Gates is in a race to find the gold before his enemies do.

Benjamin Franklin Gates and Abigail Chase re-team with Riley Poole and, now armed with a stack of long-lost pages from John Wilkes Booth's diary, Ben must follow a clue left there to prove his ancestor's innocence in the assassination of Abraham Lincoln.

A public celebration of the inauguration of Barack Obama as the 44th President of the United States of America at the Lincoln Memorial and the National Mall in Washington D.C., on January 18, 2009.

The United States Navy Band, conducted by Lieutenant Charles Brendler, performs naval and patriotic numbers on the steps of the Lincoln Memorial in Washington, D.C.

Explore some of the best-loved structures in the United States with this tour of D.C.'s monuments. The program goes behind the famous façades to tell the stories of how these structures came into existence and their importance to the country. It features everything from the Washington Monument and Arlington National Cemetery's eternal flame to war memorials and the monuments erected as tributes to America's founding fathers.