World Trade Center Site Memorial Competition

The World Trade Center Site Memorial Competition was an open, international memorial contest, initiated by the Lower Manhattan Development Corporation (LMDC) according to the specifications of the architect Daniel Libeskind, to design a memorial for the World Trade Center site (later renamed the National September 11 Memorial & Museum) at the under-construction World Trade Center in New York City. The competition began April 28, 2003 and the winner—Michael Arad and Peter Walker's Reflecting Absence—was revealed January 14, 2004, in a press conference at Federal Hall National Memorial.

Source: Wikipedia — World Trade Center Site Memorial Competition (CC BY-SA 4.0)