First responders and recovery workers are surrounded by debris at the World Trade Center site following the attacks. (Archive photo/Kevin Mount)
TED.com offers Steve Rosenbaum’s TED Talk on the development of the 9/11 Memorial Museum
The Tribute in Light serves as a backdrop to the 9/11 Memorial on Sept. 11, 2011. (Photo by Paul Marantz )
A visitor stands at one of the 9/11 Memorial's reflecting pools with the museum pavilion in the background.
(Courtesy photo)
The Explore 9/11 app for iPhone.
The field of empty chairs at the Oklahoma memorial represents the 168 victims of the April 1995 bombing. There are 19 small chairs for the child victims. (Courtesy photo)
The cross-stitch project that inspired Saunders to start the Americana Stars Memorial (photo courtesy Doreen Lynn Saunders)
(9/11 Memorial YouTube Channel)