The National September 11th Memorial commemorates the victims of the attacks at the Pentagon, at Shanksville, Pennsylvania, and at the World Trade Center site, both on September 11, 2001, and February 26, 1993. Two gigantic voids – in the footprints of the Twin Towers – and a surrounding forest of oak trees form the core of the rebuilt World Trade Center in New York City and provide a place for contemplation and remembrance within this revitalized urban center.
