Known as Reflecting Absence, the National 9-11 Memorial in New York City honors those who died in terrorist attacks on September 11, 2001 and February 26, 1993.
The National 9/11 Memorial on September 11, 2011, the 10th anniversary of the terrorist attacks.
Photo © Timothy A. Clary-Pool/Getty Images
Sheets of water tumble into two shallow pools at the National 9/11 Memorial on Ground Zero in New York City. The memorial was designed by Michael Arad and Peter Walker. This photograph was taken when the new Memorial officially opened on September 11, 2011.
Learn More: Creating the National 9-11 Memorial