World Trade Center

The Lens: Viewing the 9/11 Memorial

(Amy Dreher photo)

Pres. Obama on Viewing 9/11 Memorial: 'That's Beautiful'

(Staff photo)

Thanking the Men, Women Behind the WTC Recovery Effort

Recovery workers are surrounded by debris at the World Trade Center site following the attacks. (Archive photo/Kevin Mount)

Silverstein Imparts Knowledge on WTC Rebuilding (Updated)

Developer Larry Silverstein at the center of a WTC design meeting. (File photo, Joe Woolhead)

Video: '110 Stories' App Revives Twin Towers

(Courtesy Joel Meyerowitz/Phaidon Press)

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)