World Trade Center site
The World Trade Center site (ZIP code: 10048), formerly known as "Ground Zero" after the September 11 attacks, sits on 16 acres (65,000 m2) in Lower Manhattan in New York City. The previous World Trade Center complex stood on the site until it was destroyed in the September 11 attacks; Studio Daniel Libeskind, the Port Authority of New York and New Jersey, Silverstein Properties, and the Lower Manhattan Development Corporation oversee the reconstruction of the site. The site is bounded by Vesey Street to the north, the West Side Highway to the west, Liberty Street to the south, and Church Street to the east. The Port Authority owns the site's land (except for 7 World Trade Center). Developer Larry Silverstein holds the lease to retail and office space in four of the site's buildings.
While the Port Authority of New York and New Jersey is often identified as the owner of the WTC site, the ownership situation is actually somewhat complex and ambiguous. The Port Authority indeed owns a "significant" internal portion of the site of 16 acres (65,000 m2), but has acknowledged "ambiguities over ownership of miscellaneous strips of property at the World Trade Center site" going back to the 1960s. It is unclear who owns 2.5 acres (10,000 m2) of the site, being land where streets had been before the World Trade Center was built.
- 1 Before the World Trade Center
- 2 Original buildings
3 New buildings
- 3.1 Early proposals for redesign
- 3.2 Buildings
- 3.3 Towers
- 3.4 Criticism of progress
- 3.5 Construction
- 3.6 Gallery
- 4 See also
- 5 References
- 6 External links
Before the World Trade Center
The western portion of the World Trade Center site was originally under the Hudson River, with the shoreline in the vicinity of Greenwich Street. It was on this shoreline close to the intersection of Greenwich and the former Dey Street that Dutch explorer Adriaen Block's ship, the Tyger, burned to the waterline in November 1613, stranding Block and his crew and forcing them to overwinter on the island. They built the first European settlement in Manhattan. The remains of the ship were buried under landfill when the shoreline was extended starting in 1797, and were discovered during excavation work in 1916. The remains of a second ship from the eighteenth century were discovered in 2010 during excavation work at the site. The ship, believed to be a Hudson River sloop, was found just south of where the Twin Towers used to stand, about 20 feet below the surface.
The area that was cleared for construction of the original World Trade Center complex was previously occupied by various electronics stores in what was called Radio Row. These streets and stores were demolished in the 1960s to make way for the World Trade Center.
The original World Trade Center was thought of as a North American cultural icon. At the time of their completion the "Twin Towers", the original 1 World Trade Center (the North Tower), at 417 metres (1,368 ft), and 2 World Trade Center (the South Tower), were the tallest buildings in the world. The other buildings in the complex included the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC. All of these buildings were built between 1975 and 1985, with a construction cost of $400 million ($2,300,000,000 in 2015 dollars). The complex was located in New York City's Financial District and contained 13,400,000 square feet (1,240,000 m2) of office space.
The World Trade Center experienced a fire on February 13, 1975, a bombing on February 26, 1993 and a robbery on January 14, 1998. In 1998, the Port Authority decided to privatize the World Trade Center, leasing the buildings to a private company to manage, and awarded the lease to Silverstein Properties in July 2001.
September 11 attacks
On the morning of September 11, 2001, two 
Debris and clean-up
The collapse of the towers spread dust across New York City and left hundreds of thousands of tons of debris at the site. To organize the cleanup and search for survivors and for human remains, the New York City Fire Department divided the disaster site into four sectors, each headed by its own chief. Early estimates suggested that debris removal would take a year, but cleanup ended in May 2002, under budget and without a single serious injury. Three years later, in February 2005, the New York City Medical Examiner's office ended its process of identifying human remains at the site.
According to NIST, when WTC 1 (the North Tower) collapsed, falling debris struck 7 World Trade Center and ignited fires on multiple floors. The uncontrolled fires ultimately led to the progressive collapse of the structure. Portions of the South Tower also damaged the nearby Deutsche Bank Building, which soon became filled with toxic dust. By 2002, Deutsche Bank determined that its building was unsalvageable. By January 2011, the Deutsche Bank Building was finally completely demolished.
Cleanup workers trucked most of the building materials and debris from Ground Zero to Fresh Kills Landfill in Staten Island. Some people, such as those affiliated with World Trade Center Families for Proper Burial, were worried that human remains might also have been (inadvertently) transported to the landfill.
In August 2008, New York City firefighters donated a cross made of steel from the World Trade Center to the Shanksville Volunteer Fire Company. The beam, mounted atop a platform shaped like the Pentagon, was erected outside the Shanksville firehouse near the crash site of United Airlines Flight 93.
In December 2001, a temporary viewing platform at Fulton Street, between Church Street and Broadway, opened to the public.
On March 11, 2002, 88 searchlights were installed and arranged to form two beams of light shooting straight up into the sky. This is called the Tribute in Light, and was originally lit every day at dusk until April 14, 2002. After that, the lights were lit on the two-year anniversary of the attack and have been lit on each subsequent September 11 since then.
In July 2010 a team of archaeologists at the site discovered the remains of a 32-foot (9.8 m)-long boat over 200 years old; it was probably made in the 18th century and dumped there along with wooden beams and trash in about 1810 to make up the land. The boat had been weighted to make it sink as part of foundations for a new pier. Samples of its wood have been taken for dendrochronology.
Rebuilding of the
World Trade Center
|2 – 7 WTC|
Soon after the September 11 attacks, Mayor  During a visit to the site on September 14, 2001, Bush spoke to a crowd of cleanup workers through a megaphone. An individual in the crowd shouted, "I can't hear you," to which Bush replied, "I can hear you. The rest of the world hears you. And the people who knocked these buildings down will hear all of us soon."
In a later address before Congress, the president declared, "As a symbol of America's resolve, my administration will work with Congress, and these two leaders, to show the world that we will rebuild New York City." The immediate response from World Trade Center leaseholder Larry Silverstein was that "it would be the tragedy of tragedies not to rebuild this part of New York. It would give the terrorists the victory they seek." However, in 2011, only one building, 7 World Trade Center, had been rebuilt. The buildings that have been rebuilt so far include 7 World Trade Center, One World Trade Center, and Four World Trade Center. The original twin towers took less than three years from start of construction to be finished, and 5 years from the beginning planning stages. However, given the complexity and highly political nature of the rebuilding efforts, they are often cited as an example of a successful public-private collaboration and are taught as a case study in successful negotiations.
Early proposals for redesign
Lower Manhattan Development Corporation
Governor Pataki established the Lower Manhattan Development Corporation (LMDC) in November 2001, as an official commission to oversee the rebuilding process. The LMDC coordinates federal assistance in the rebuilding process, and works with the Port Authority, Larry Silverstein, and Studio Daniel Libeskind, the master plan architect for the site's redesign. The corporation also handles communication with the local community, businesses, the city of New York, and relatives of victims of the September 11 attacks. A 16-member board of directors, half appointed by the governor and half by the mayor of New York, governs the LMDC.
The LMDC had questionable legal status regarding the restoration of the World Trade Center site, because the Port Authority owns most of the property and Larry Silverstein leased the World Trade Center's office space in July 2001. But the LMDC, in an April 2002 articulation of its principles for action, asserted its role in revitalizing lower Manhattan.
Directly after the attacks
In the months following the attacks, architects and urban planning experts held meetings and forums to discuss ideas for rebuilding the site. In January 2002, New York City art dealer Max Protetch solicited 50 concepts and renderings from artists and architects, which were put on exhibit in his Chelsea art gallery.
In April 2002, the LMDC sent out requests for proposals to redesign the World Trade Center site to 24 Manhattan architecture firms, but then soon withdrew them. The following month, the LMDC selected Beyer Blinder Belle as planner for the redesign of the World Trade Center site.
On July 16, 2002, Beyer Blinder Belle unveiled six concepts for redesigning the World Trade Center site. All six designs were voted "poor" by the roughly 5,000 New Yorkers that submitted feedback, so the LDMC announced a new, international, open-design study.
2002 World Trade Center site design competition
In an August 2002 press release, the LMDC announced a design study for the World Trade Center site. The following month, the LMDC, along with New York New Visions – a coalition of 21 architecture, engineering, planning, landscape architecture and design organizations – announced seven semifinalists. The following seven architecture firms were then invited to compete to be the master plan architect for the World Trade Center:
- Foster and Partners (Norman Foster)
- Studio Daniel Libeskind (Daniel Libeskind)
- Meier Eisenman Gwathmey Holl (Peter Eisenman, Richard Meier, Charles Gwathmey and Steven Holl), sometimes known as "The Dream Team"
- Skidmore, Owings & Merrill
- THINK Team (Shigeru Ban, Frederic Schwartz, Ken Smith, Rafael Vinoly)
- United Architects
Peterson Littenberg, a small New York architecture firm, had been enlisted by the LMDC earlier that summer as a consultant, and was invited to participate as the seventh semifinalist.
The seven semifinalists presented their entries to the public on December 18, 2002, at the Winter Garden of the World Financial Center. In the following weeks, Skidmore, Owings & Merrill withdrew its entry from the competition.
Days before the announcement of the two finalists in February 2003, Larry Silverstein wrote to LMDC Chair John Whitehead to express his disapproval of all of the semifinalists' designs. As the Twin Towers' insurance money recipient, Silverstein claimed that he had the sole right to decide what would be built. He announced that he had already picked Skidmore, Owings & Merrill as his master planner for the site.
On February 1, 2003, the LMDC selected two finalists, the THINK Team and Studio Daniel Libeskind, and planned on picking a single winner by the end of the month. Rafael Viñoly of the THINK Team and Studio Daniel Libeskind presented their designs to the LMDC, which selected the THINK design. Earlier the same day, however, Roland Betts, a member of the LMDC, had called a meeting and the corporation had agreed to vote for the THINK design before hearing the final presentations. Governor Pataki, who had originally commissioned the LMDC, intervened and overruled the LMDC's decision. On February 27, 2003, Studio Daniel Libeskind officially won the competition to be the master planner for the World Trade Center redesign.
Libeskind's original proposal, which is titled Memory Foundations, underwent extensive revisions during collaboration with Larry Silverstein, and Skidmore, Owings & Merrill, whom Silverstein hired. Though Libeskind designed the site, the individual buildings have been designed by different architects. While not all of Liebeskind's ideas were incorporated into the final design, his design and the public support it garnered did solidify the principle that the original footprints of the Twin Towers should be turned into a memorial and not be used for commercial purposes. As a result, Liebeskind's lawyers at the New York firm of Wachtell Lipton embarked on the multi-year negotiation process to frame a master plan for the rebuilding. The first step in this process, completed in 2003, was the "swap" in which Silverstein gave up his rights to the footprints of the Twin Towers so that they could become a memorial, and in exchange received the right to build five new office towers around the memorial. The "swap" and the ensuing negotiations, which lasted for many years, have been referred to as the most complex real estate transaction in human history because of the complexity of the issues involved, the many stakeholders, and the difficulty of reaching consensus.
One World Trade Center (previously coined the "Freedom Tower" by Governor Pataki) is the centerpiece of Libeskind's design. The building will rise to 1,368 feet (417 m), the height of the original World Trade Center north tower, and its antenna will rise to the symbolic height of 1,776 feet (541 m). The antenna's height refers to 1776, the year in which the United States Declaration of Independence was signed.
The tower was a collaboration between Studio Daniel Libeskind and Skidmore, Owings & Merrill architect David Childs. Childs acted as the design architect and project manager for the tower, and Daniel Libeskind collaborated on the concept and schematic design. According to a NY1 article on March 8, 2011, a plan to build a restaurant on top of One World Trade Center (to duplicate the Windows on the World restaurant of old) was scrapped entirely because of potential risk of rising costs to build and maintain the establishment over the benefits of having one at all. Also, one of the main tenants of this tower to be confirmed is the Condé Nast Publications company, once it officially opens.
Bear Stearns had put the future of the 130 Liberty Street site in question, as the company is now planning to relocate its headquarters to 383 Madison Avenue. Construction began on September 9, 2011.
7 World Trade Center stands off of Port Authority property. David Childs of Skidmore, Owings & Merrill designed the tower, which opened in May 2006. The project company also announced that all of the towers will be completed even with the effects of the late 2000s recession at the worst case before 2020.
Memorial and museum
A memorial called "Reflecting Absence" honors the victims of the September 11 attacks and the 1993 World Trade Center bombing. The memorial, designed by Peter Walker and Israeli-American architect Michael Arad, consists of a field of trees interrupted by the footprints of the twin towers. Pools of water fill the footprints, underneath which sits a memorial space whose walls bear the names of the victims. The slurry wall, which holds back the Hudson River in the west and was an integral part of Libeskind's proposal, remains exposed. Walker and Arad were selected from more than 5,000 entrants in the World Trade Center Site Memorial Competition in January 2004. Construction of the memorial was completed before September 11, 2011.
On October 12, 2004, the LMDC announced that Gehry Partners LLP and Snøhetta, an architectural firm from Norway, would design the site's performing arts and museum complexes, respectively, in the same area as the memorial.  The Snøhetta-designed museum will act as a memorial museum and visitors' center, after family members of 9/11 victims objected to the building's original occupant, the International Freedom Center. Gehry's performing arts complex will house only the Joyce Theater, as the Signature Theater Company dropped out due to space constraints and cost limitations. The Ground Zero Museum Workshop is a privately run 501c nonprofit museum that is not connected to the official Ground Zero Memorial or Gehry's museum.
In early December 2013, Australian retail corporation Westfield announced that it will invest US$800 million for complete control of the retail space at the rebuilt center. Westfield, Australia's largest shopping mall operator, will purchase the Port Authority of New York and New Jersey’s 50 percent stake in the retail part of the World Trade Center site, increasing its total investment to more than US$1.4 billion.
Santiago Calatrava designed the World Trade Center Transportation Hub (its main asset being the PATH station) to replace the old World Trade Center station. The Transport Hub will connect the PATH station and 1 New York City Transit Authority subway train to the ferry terminal, the World Financial Center and One World Trade Center on the west and the 2 3 4 5 A C J N R Z New York City Transit Authority subway trains through the Fulton Center on the East. One will be able to walk most of the way across lower Manhattan. The Port Authority will cool the new station, as well as the September 11 Memorial and Museum, via a heat exchanger fed by four pipes carrying water from the Hudson River. The cost for the transportation hub is estimated at $3.44 billion.
St. Nicholas Greek Orthodox Church
A deal has been reached between church officials, Governor Andrew Cuomo, and the Port Authority to have the church rebuilt on the same site, but three times the original size on October 14, 2011, according to NY1.
Criticism of progress
An episode of CBS's 60 Minutes in 2010 focused on the lack of progress at Ground Zero, particularly on the lack of completion dates for a majority of the buildings, the main tower, 1 World Trade Center (previously known as the Freedom Tower)'s having undergone three different designs, and the delays and monetary expense involved. Investor Larry Silverstein said the Port Authority's estimated completion date for the entire site was 2037, and billions of dollars had already been spent on the project, even though Ground Zero "is still a hole in the ground". During an interview for the episode, Larry Silverstein said: "I am the most frustrated person in the world...I'm seventy-eight years of age; I want to see this thing done in my lifetime". However, it was noted that in early 2011, all five office towers of the World Trade Center are under construction with significant progress being made. All of the towers will be opened between 2014–2016, with the National September 11 Memorial & Museum already completed on the tenth anniversary of the attacks, on September 11, 2011. Criticism of progress and calls for redesigns were mostly made in 2008 and 2009, when progress at the site was clearly not being made.
The social center of the old World Trade Center included a spectacular restaurant on the 107th Floor, called Windows on the World, and its Greatest Bar in the World; these were tourist attractions in their own right, and a social gathering spot for people who worked in the towers. This restaurant also housed one of the most prestigious wine schools in the United States, called "Windows on the World Wine School", run by wine personality Kevin Zraly. Despite numerous assurances that these local landmarks and global attractions would be rebuilt, the Port Authority scrapped plans to rebuild these WTC attractions, which has outraged some observers.
ConstructionAs of December 2014, progress on the construction of the redesigned site was as follows:
|Name||Image||Date construction started||Date of completion||Construction summary||Current status|
|1 World Trade Center||April 27, 2006||November 3, 2014||Construction was supposed to begin in Fall 2004 after the design plans were finalized earlier that year but NYPD raised security concerns which caused extensive revisions to the existing plans and delaying the start of the construction of the building by two years. Among the notable changes was the tower was moved further away from the West Highway and a heavily fortified base of the building. In 2006, the Port Authority took over from Silverstein Properties as the project's developer Tishman Construction Corporation is the construction manager. and construction began in April of that year. Digging the foundation and installing tower-foundation steel columns, concrete, and rebar took twice as long as it normally would. The construction crews were prevented from using heavy machineries to dig the foundation due to the building's location now closer to be the near the existing Subway line. The building reached grade level by 2010 and progressed at a pace of one floor a week and was topped out in August 2012, and structurally completed in May 2013. The building opened on Nov 3rd, 2014 with the first 170 employees of anchor tenant Conde Nast began work at the building.||Completed|
|2 World Trade Center||November 10, 2008||style="background: #ececec; color: grey; vertical-align: middle; text-align: center; " class="table-na" | N/A||A ground-level podium was planned to be built to ground level by August 2012, with further construction to start as real estate demands increased.||On hold|
|3 World Trade Center||November 10, 2008||c. 2018||Groundbreaking occurred in the fall of 2008 but construction was halted in Summer of 2012 due to lack of anchor tenants. However work progressed on the below-grade foundations and ground level podium which was completed by October 2013. An anchor tenant, Group M was finally signed in late 2013 but finance negotiations between Silverstein Properties and Port Authority dragged until an agreement was reached in June 2014. Construction resumed in August 2014 and building is now scheduled to be completed by 2018.||Under construction|
|4 World Trade Center||November 10, 2008||November 13, 2013||Construction began in the fall of 2008 and the building was declared complete on November 13, 2013. However small amounts of exterior and interior work remains and is expected to be finished by December 2014. The first tenants are expected to move in January 2015.||Completed|
|5 World Trade Center||September 9, 2011||style="background: #ececec; color: grey; vertical-align: middle; text-align: center; " class="table-na" | N/A||Site preperation work began on September 9, 2011 with the Port Authority acts as the building's developer but construction was halted in 2012 until an anchor tenant is found.||On hold|
|7 World Trade Center||May 7, 2002||May 23, 2006||Construction of the new 7 World Trade Center began in 2002 and was completed in 2006. The building is 52 stories tall (plus one underground floor), making it the 28th-tallest in New York. Opened on May 23, 2006 and achieved LEED gold status.||Completed|
|National September 11 Memorial||
||March 13, 2006||September 11, 2011||The Memorial opened on September 11, 2011, coinciding with the 10th anniversary of the attacks.||Completed|
|National September 11 Museum||March 13, 2006||May 21, 2014||The museum was initially scheduled to open on September 11, 2012, one year after the opening of the Memorial. However, construction was halted in December 2011 due to financial disputes between the Port Authority of New York and New Jersey and the National September 11 Memorial and Museum Foundation, deciding on who should be responsible for infrastructure costs. Those disputes were resolved and construction resumed on March 13, 2012. Further delays were caused when Hurricane Sandy significantly damaged the site in November 2012. The museum was completed and opened to families of the victims on May 15, 2014 and opened to the general public on May 21, 2014.||Completed|
|World Trade Center Transportation Hub||April 26, 2010||December 17, 2015||A temporary PATH station opened in 2003 and construction on the permanent station was supposed to begin in fall 2004; however, the NYPD raised security concerns on the entire site. Among the revisions effecting the Transportation Hub was doubling the number of support columns. In the original plan, the construction of the 9/11 Memorial and Museum was only supposed to have begun after the Transportation Hub had been completed because the roof of the Transportation Hub provided the foundation on which the Memorial rested upon and the walls of the Museum. Due to the two-year delay and pressure by Victim's families to have the Memorial completed by the 10-year anniversary, it was decided to concentrate on building the Memorial and holding off construction of the Transportation Hub. Construction finally began on the Transportation Hub in 2010 and now is expected to be finished by December 2015, six years after it was originally expected to be finished.||More than halfway to completion|
|Performing Arts Center||TBA||~ December 2014||c. 2019||Construction will begin in December 2014 when the removal of the temporary PATH station commences. Expected to be complete by 2019.||Construction not started|
|Vehicular Security Center||TBA||November 10, 2011||c. 2016||The VSC will open in phases. The first phase will open by August 2014 for only beneficial use. The second phase is expected to be open by December 2015 for Bus Parking. The final phase will open sometime in 2016.||More than half way to completion|
|Liberty Park||November 20, 2013||c. 2015||Construction began in November 2013 when the Vehicular Security Center's roof was structurally complete. Currently has a timeframe of opening in second quarter of 2015, delayed from the previous first quarter of 2015.||More than halfway to completion|
|St. Nicholas Greek Orthodox Church||style="background: #ececec; color: grey; vertical-align: middle; text-align: center; " class="table-na" | TBA||October 18, 2014||c. 2017||Construction began with the groundbreaking occurring on October 18, 2014. The structure should be complete by late 2016 or early 2017.||Under construction|
A light still on at Ground Zero remains, 2001.
From the south, a view of ongoing excavation in July 2002. The slurry wall circumscribing the site is visible, as is the damaged Verizon Building in the background.
Aerial view of the site from the northwest, 2002.
The World Trade Center site after cleanup, 2003.
Visitor and observation plaza, 2005.
Construction progress, as of January 21, 2008
Construction as of March 2, 2010. The frame for Tower 4 can be seen rising on the left.
Construction progress, as of September 2010
Construction progress, as of August 22, 2011
Overhead, April 2010
From the 30th floor of the W Hotel, July 28, 2010
The completed fountain and the museum (under construction), October 2011.
One World Trade Center on June 1, 2011. Tower steel is prepared to grow up to the 68th floor.
One World Trade Center on January 28, 2012. Glass has been placed higher than 7 World Trade Center.
Four World Trade Center under construction on March 12, 2012.
Progress as of November 15, 2011. Steel is past 89 floors, glass is at the 63rd floor, and concrete is past the 80th floor.
One World Trade Center on January 28, 2012.
One World Trade Center on March 13, 2012.
One World Trade Center on April 13, 2012. Steel is up to 100 floors, and glass is at 71.
One World Trade Center as of May 27, 2012.
One World Trade Center under construction on July 24, 2012.
One World Trade Center on August 20, 2012.
One World Trade Center on November 4, 2012.
One World Trade Center on February 22, 2013. Glass is now being fitted to the mechanical floors 91-99, and the first two sections of the spire now in place.
One World Trade Center on May 1, 2013. The spire is close to completion with windows reaching the top of the building.
The spire beacon was installed on May 10, 2013, as seen here, making One WTC the tallest building in the Western Hemisphere.
One WTC as of June 1, 2013 with glass facade mostly completed up to the top.
- Collapse of the World Trade Center
- Construction of One World Trade Center
- Health effects arising from the September 11 attacks
- Survivors' Staircase
- Verizon Building
- Barry, Dan (September 24, 2001). "'"A Nation Challenged - The Site: 'At the Scene of Random Devastation, a Most Orderly Mission.
- Hartocollis, Anemona (March 27, 2008). "Developer Sues to Win $12.3 Billion in 9/11 Attack".
- Dunlap, David W. (April 22, 2004). "Who Owns Ground Zero? Don't Expect a Simple Answer".
- CNN: Pieces of ship made in 1700s found at ground zero building site
- Consumer Price Index (estimate) 1800–2014. Federal Reserve Bank of Minneapolis. Retrieved February 27, 2014.
- Holusha, John (January 6, 2002). "Commercial Property; In Office Market, a Time of Uncertainty". The New York Times. Retrieved November 21, 2008.
- "Ford recounts details of Sept. 11". Real Estate Weekly (BNET). February 27, 2002. Retrieved January 3, 2009.
- "US Shocked by Terror Attacks".
- Barry, Dan (September 12, 2001). "A DAY OF TERROR: HOSPITALS; Pictures of Medical Readiness, Waiting and Hoping for Survivors to Fill Their Wards".
- Barry, Dan (September 17, 2001). "AFTER THE ATTACKS: THE TALLY; With No Miracle in the Rubble, Hope Grimly Shifts to Acceptance".
- Barry, Dan (September 24, 2010). "A NATION CHALLENGED: THE SITE; At the Scene of Random Devastation, a Most Orderly Mission".
- Iovine, Julie V. (September 27, 2001). "Designers Look Beyond Debris".
- "The Last Steel Column".
- Hirschkorn, Phil (February 23, 2005). "Identification of 9/11 remains comes to end".
- "NIST News Release: NIST WTC 7 Investigation Finds Building Fires Caused Collapse". NIST. 2008-08-21. Retrieved 2008-09-11.
- Varchaver, Nicholas (March 20, 2008). "The tombstone at Ground Zero".
- GANASSI, MICHELLE (2008-08-25). "NY firefighter donating steel to Shanksville". Daily American cv. Retrieved 2008-08-22.
- Gaskell, Stephanie (2008-08-25). "Pa. site of 9/11 crash gets WTC beam". New York Daily news. Retrieved 2008-08-26.
- Hirschkorn, Phil (December 30, 2001). "A NATION CHALLENGED: GROUND ZERO; First Viewing Platform Opens to the Public".
- Dunlap, David W. (September 9, 2006). "Twin Beams to Light Sky Again. But After 2008?".
- Daily Telegraph, Friday 16 July 2010, page 16; , with images, , , , 
- Taylor, Tess (September 26, 2001). "Rebuilding in New York". Architecture Week.
- Walsh, Edward (September 15, 2001). "Bush Encourages N.Y. Rescuers" (PDF).
- "Address to a Joint Session of Congress and the American People". The White House. September 20, 2001.
- Litt, Steven (September 17, 2001). "In place of the Trade Center; Ideas range from building new towers to playground". Plain Dealer (Cleveland).
- Cornell Real Estate Review, Volume 10, Number 1 (July 2012), 39-53, http://cip.cornell.edu/cpre.crer/1342144023 http://www.cornell.edu/video/?videoID=1680
- Pérez-Peña, Richard (November 3, 2001). "A NATION CHALLENGED: DOWNTOWN; State Plans Rebuilding Agency, Perhaps Led by Giuliani".
- "A Corporation to Rebuild Ground Zero".
- "Governor and Mayor Name Lower Manhattan Redevelopment Corporation" (Press release). www.RenewNYC.org. November 29, 2001. Retrieved 2008-06-16.
- "Lower Manhattan Development Corporation Announces Principles for Development and Blueprint for Renewal for World Trade Center Site" (Press release). www.RenewNYC.org. April 9, 2002. Retrieved 2008-06-16.
- McGuigan, Cathleen (November 12, 2001). "Up From The Ashes". Newsweek.
- Wyatt, Edward (January 11, 2002). "Everyone Weighs In With Rebuilding Ideas".
- "Port Authority and Lower Manhattan Developent (sic) Corporation Unveil Six Concepts Plans for World Trade Center Site, Adjacent Areas and Related Transportation" (Press release). www.RenewNYC.org. July 16, 2002. Retrieved 2008-06-16.
- "Lower Manhattan Development Corporation and New York New Visions Announce Panel to Help Select Teams to Participate in Design Study of World Trade Center Site and Surrounding Areas" (Press release). www.RenewNYC.org. September 17, 2002. Retrieved 2008-06-16.
- "Lower Manhattan Development Corporation Announces Design Study for World Trade Center Site and Surrounding Areas" (Press release). www.RenewNYC.org. August 14, 2002. Retrieved 2008-08-07.
- Iovine, Julie (February 26, 2003). "Turning a Competition Into a Public Campaign; Finalist for Ground Zero Design Pull Out the Stops".
- "Lower Manhattan Development Corporation Announces Six Teams of Architects and Planners to Participate in Design Study of World Trade Center Site" (Press release). www.RenewNYC.org. September 26, 2002. Retrieved 2008-06-16.
- McGeveran, Tom (February 9, 2003). "Beauty Contest: Two Firms Vie At W.T.C. Site".
- Libeskind, Daniel (2004). Breaking Ground. New York:
- Raab, Scott (May 24, 2007). "Construction of World Trade Center". Esquire.
- "Freedom Tower: About the Building". Silverstein Properties. Retrieved 2008-01-21.
- Lerner, Kevin (August 2003). "Libeskind and Silverstein reach an agreement for WTC site".
- "Port Authority Scraps Plans For One World Trade Center Restaurant".
- Bagli, Charles V. (May 17, 2011). "Condé Nast Will Be Anchor of 1 World Trade Center".
- Cuza, Bobby (May 25, 2011). "9/11 A Decade Later: Conde Nast To Occupy 1 World Trade Center".
- "World Trade Center Towers". Lower Manhattan Development Corporation.
- NY1 Exclusive: Developer Says WTC Project To Be Complete In Five, Six Years NY1. Retrieved August 17, 2010.
- Naanes, Marlene (June 22, 2007). "JP Morgan releases WTC tower plans".
- Appelbaum, Alec (July 30, 2007). "Kohn Responds to WTC5 Criticisms".
- Cuza, Bobby (July 8, 2011). "9/11 A Decade Later: The 9/11 Memorial From All Sides".
- "Reflecting Absence". Lower Manhattan Development Corporation. 2004.
- The politics of remembering Ground Zero - Haaretz - Israel News
- Cuza, Bobby (August 10, 2010). "Media Get Sneak Peek Of 9/11 Museum Site".
- First Trees Are Planted At September 11th Memorial Site NY1 local news channel. Retrieved August 28, 2010.
- WTC Memorial To Display Mementos Of Attack Victims NY1 local news channel. Retrieved October 20, 2010.
- Sept. 11th Memorial Plaza Receives Its 50th Oak Tree NY1 local news channel. Made October 26, 2010. Retrieved October 27, 2010.
- Visitors To WTC Site Get Vivid Preview Of 9/11 Memorial NY1 local news channel. Retrieved November 23, 2010.
- Scotto, Michael (December 22, 2010). Survivor Tree" Replanted At WTC Site""".
- "WTC Memorial To Have Limited Access On 10th Anniversary".
- "Port Authority: WTC Memorial Needs Another $3M For Construction".
- "The Lower Manhattan Development Corporation Announces Selection of Architectural Firms to Design the Performing Arts Complex and the Museum Complex on the World Trade Center Site" (Press release). www.RenewNYC.org. October 12, 2004. Retrieved 2008-08-07.
- Spitz, Rebecca (March 9, 2011). "9/11 A Decade Later: Glass Atrium Rises At WTC Memorial Site".
- Erlanger, Steven (2011-10-15). "Again in Norway, Events Provide Test for a King’s Mettle".
- "History". Ground Zero Museum Workshop. Ground Zero Museum Workshop. 2013. Retrieved 15 December 2013.
- Iain McDonald and Nichola Saminather (5 December 2013). "Westfield to Buy World Trade Center Retail Stake". Bloomberg Personal Finance (Bloomberg L.P). Retrieved 15 December 2013.
- Dunlap, David W. (July 2, 2008). "Design of Ground Zero Transit Hub Is Trimmed".
- Dunlap, David W. (April 6, 2009). "Using the Hudson to Cool the Trade Center".
- Grynbaum, Michael M. (February 24, 2011). "Trade Center Transit Hub’s Cost Now Over $3.4 Billion". New York Times. Retrieved 2011-02-25.
- "Port Authority Reports Increase In WTC Transit Hub Costs".
- Cuza, Bobby (April 28, 2011). "9/11 A Decade Later: Port Authority Downplays WTC Transit Hub's Rising Costs".
- David Lee Miller,Kathleen Foster and Judson Berger (18 August 2010). "Decision Not to Rebuild Church Destroyed on 9/11 Surprises Greek Orthodox Leaders". Fox News. Retrieved 26 August 2010.
- "Church Destroyed On 9/11 Files Suit Against Port Authority".
- "Historic Church Destroyed On 9/11 To Rise Again".
- "Developer: Ground Zero a National Disgrace - 60 Minutes: Eight Years and Billions of Dollars Later, Part of 9/11 Site is Still Just a Big Hole". CBS News. 2010-02-18. p. 1.
- "PHOTOS: The Stunning Views Atop One World Trade Center". Huffington Post. April 2, 2013.
- "WTC Scraps Windows on the World Plan". Gothamist. March 8, 2011.
- "The Truth About the World Trade Center". Esquire Magazine. 2013.
- "Is the World Trade Center Safe?". Esquire Magazine. 2014.
- "Freedom Tower". Silverstein Properties. 2008.
- Cuza, Bobby (September 2, 2011). "9/11 A Decade Later: One World Trade Center Rises In Lower Manhattan".
- "Tower 2". Silverstein Properties. 2008.
- Geiger, Daniel (2012-10-03). "GroupM Considers Huge Lease to Anchor 3 WTC". Commercial Observer. Retrieved 2013-11-03.
- Rich, Schapiro (September 10, 2013). "9/11 anniversary: After 12 years, new WTC taking shape after terror attack". New York Daily News. Retrieved 14 November 2013.
- "Tower 4 Schedule". Silverstein Properties. 2008.
- Port Authority Approves WTC Construction Plan NY1 local news channel. Retrieved August 26, 2010.
- "City Shells Out $32.9M To Lease Space At World Trade Center".
- Cuza, Bobby (April 22, 2011). "9/11 A Decade Later: Tower Four Emerges From The Ground".
- "Work to Resume at Burned Bank Tower".
- "Tower 5". Silverstein Properties. 2008.
- "One World Trade Center – The Skyscraper Center". Council on Tall Buildings and Urban Habitat. Retrieved April 14, 2014.
- About 7 WTC
- "Tower 7". Silverstein Properties. 2008.
- "Memorial & Museum, Schedule". Silverstein Properties. 2008.
- Cuza, Bobby (September 5, 2011). "WTC Memorial Ready For Public Unveiling".
- "The Truth About the World Trade Center". Esquire Magazine. 2011.
- Official site - Silverstein Properties
- 9/11 Tribute Center
- Reviving Ground Zero - interactive slideshow with audio by The New York Times
- Downtown Restoration Program - Port Authority of New York & New Jersey
- National September 11 Memorial & Museum at the World Trade Center
- Project Rebirth
- World Trade Center Rising
- RebuildGroundZero.org, a community project based on Ground Zero's rebuilding.
- The Freedom Tower (YouTube)