World Trade Center - Terrorist Attacks
See how New York's Freedom Tower changed as architects revised the original...
Now known as "One World Trade Center," New York's Freedom Tower grew out of a long and difficult design process. Learn about the many revisions and see pictures that illustrate the building's transformation.
Through words and dramatic photos, this essay describes the 9/11 terrorist attack on the New York World Trade Center.
What Are They Building on Ground Zero?
A decade after the 9/11 terrorist attacks, New York's World Trade Center is rising from the ashes. These amazing skyscrapers are on the horizon at Ground Zero.
9/11/01 - 9/11/13
Rebuilding New York after the terrorist attacks has been slow and difficult, but the early dreams for recovery are on the horizon. This timeline traces the reconstruction project from the earliest plans through to the opening of Towers and Memorials at Ground Zero.
Memorial Architecture and Art: Reactions to Terrorism
Many architects and designers have contributed powerful memorials for the victims of the terrorist attacks at the World Trade Center and elsewhere.
Why the Twin Towers Fell
Engineers who studied the World Trade Center after the September 11 attacks tell why the Twin Towers stood as long as they did, and why the World Trade Center Twin Towers eventually collapsed.
The Destroyed World Trade Center Buildings
Built in the 1970s by Minoru Yamaski & Associates, the World Trade Center Twin Towers dominated the New York skyline. Learn about the buildings that were lost on September 11, 2001.
Books to Remember the World Trade Center
These books are wonderful resources to learn about the Twin Towers that were destroyed by terrorists on September 11, 2001.
Park51, the Ground Zero "Mosque"
See preliminary sketches and find out plans for the Park51 Community Center, which critics dubbed the "Ground Zero Mosque."
Architects' Plans for Tower 1, Freedom Tower
Reconstructing the World Trade Center site in New York City is a slow, complicated process. This photo gallery shows pictures of the redesigned Tower 1, also known as "Freedom Tower."
Architects' Plans for Tower 2
Norman Foster's sketches and plans reveal the innovative design for Tower 2, the second tower at the reconstructed World Trade Center.
Architects' Plans for Tower 3
Browse this picture gallery for drawings of the proposed World Trade Center Tower 3, designed by Richard Rogers Partnership.
Architects' Plans for Tower 4
See drawings of the proposed World Trade Center Tower 4, designed by Fumihiko Maki
Architects' Plans for the WTC Transit Hub
Spanish architect Santiago Calatrava has designed an elegant transportation complex for the new World Trade Center at Ground Zero in New York City. See renderings and site plans.
Architects' Plans for the National 9/11 Memorial
From the earliest renderings to the finished project, this gallery traces the evolution of the National 9/11 Memorial and Museum in New York City.
Libeskind's World Trade Center Plan
Selected to rebuild on Ground Zero, Studio Libeskind proposes an ambitious plan that has stirred emotion and controversy. Here are FAQ and a photo gallery.
The New World Trade Center Proposals
Seven teams, representing some of the greatest minds in architecture, have unveiled plans for the World Trade Center site. Four of the new proposals call for building the tallest skyscraper in the world. View plans here and cast your vote.