The Pentagon Memorial honors the 184 lives lost in the Pentagon and on American Airlines Flight 77 during the terrorist attacks on September 11, 2001. The Memorial includes a park and gateway spanning approximately two acres.
The Pentagon 9/11 Memorial, is seen August 21, 2011, in the southwest corner of The Pentagon Building. It is a permanent outdoor memorial to the 184 men, women, and children who lost their lives as victims of the attack, killed both in the building and on American Airlines Flight 77 in the September 11, 2001 attacks.
3000 flags line the Pentagon Healing Field where each flag represents a victim of the September 11 attacks, at the September 11 Pentagon Memorial Thursday, Sept. 11, 2008 at the Pentagon in Washington. (AP Photo/Evan Vucci)