The Lens: Viewing the 9/11 Memorial

9/11 Memorial Museum Director Alice Greenwald leads a tour of the museum, which opens in 2012. (Amy Dreher photo)

Video: Ex-Radical Now Fighting Extremism

Wounded U.S. Service Members Take in 9/11 Memorial

From left to right, 9/11 Memorial President Joe Daniels presents the "Survivor Tree" to former NFL players Chad Lewis and Tedy Bruschi.

9/11 Memorial Rising Into View

The enormous north pool of the 9/11 Memorial is in the foreground of a looming One World Trade Center. (Joe Woolhead photo)
Mayor Bloomberg discusses Osama bin Laden's death and progress at World Trade Center site. (Spencer T Tucker photo)