World Trade Center (2001–present)

World Trade Center
Company type	Redevelopment project
Industry	Real estate, construction, memorial
Founded	2004
Headquarters	New York City, United States
Area served	Lower Manhattan, New York City
Products	Skyscrapers, memorial, museum, transportation hub, performing arts center

The newly developed World Trade Center (WTC) is a collection of structures situated in Lower Manhattan, New York City, constructed to replace the original seven buildings that were destroyed during the September 11 attacks in 2001. This redevelopment project encompasses up to six skyscrapers, with four already completed; a National September 11 Memorial & Museum; the raised Liberty Park featuring the St. Nicholas Greek Orthodox Church and Vehicular Security Center; the Perelman Performing Arts Center; and a major transportation hub. The centerpiece of the complex is the 104-story One World Trade Center, which stands as the tallest structure in the Western Hemisphere.

The original World Trade Center, including its iconic Twin Towers, opened in 1973 and held the title of the tallest buildings worldwide at that time. These towers were destroyed on September 11, 2001, when hijacked airplanes were deliberately flown into them, resulting in the deaths of 2,753 individuals and causing catastrophic structural damage to adjacent buildings. The cleanup and recovery operations lasted eight months before reconstruction efforts commenced.

Following delays and public debate, rebuilding began in 2004. The new complex includes One World Trade Center (previously known as "Freedom Tower"), alongside 3 World Trade Center, 4 World Trade Center, 7 World Trade Center, and a proposed high-rise at 2 World Trade Center. Additionally, it features a museum, memorial, and a transportation hub comparable in scale to Grand Central Terminal.

The first skyscraper to be completed was 7 World Trade Center, which opened on May 23, 2006. Subsequently, 4 World Trade Center was inaugurated on November 12, 2013, adhering to the site's overall master plan. The National September 11 Memorial was unveiled on September 11, 2011; the Museum opened on May 21, 2014; One World Trade Center was completed on November 3, 2014; the Transportation Hub began operation on March 4, 2016; and 3 World Trade Center opened on June 11, 2018. Construction for 2 World Trade Center has remained suspended since 2012.

Original complex and the September 11 attacks

The original World Trade Center consisted primarily of the Twin Towers (1 WTC and 2 WTC), which were the tallest buildings worldwide when they officially opened on April 4, 1973. The site also included the Marriott World Trade Center (3 WTC), along with 4 WTC, 5 WTC, 6 WTC, and 7 WTC. Although initially anticipated to be highly profitable, the complex did not achieve financial success until the 1980s. On July 24, 2001, the Port Authority leased the entire complex to Larry Silverstein, who already owned building 7 WTC. For $3.2 billion, Silverstein secured a lease for a duration of 99 years to manage operations at the site. At that time, tenant occupancy was low, prompting Silverstein to propose upgrades aimed at attracting additional businesses.

These redevelopment plans were abruptly halted on September 11, 2001, when al-Qaeda terrorists hijacked two Boeing 767 aircraft and crashed them into the Twin Towers. American Airlines Flight 11 struck the North Tower at 8:46 a.m. EDT, followed by United Airlines Flight 175 impacting the South Tower at 9:03 a.m. After burning for approximately 56 minutes, the South Tower collapsed at 9:59 a.m., while the North Tower fell at 10:28 a.m. after enduring fire for about 102 minutes. The attacks resulted in the deaths of 2,753 people and caused structural failures that led to total destruction of all buildings within the complex.

Recovery and debris removal operations proceeded continuously for eight months following the attacks. Waste materials were transported to Fresh Kills Landfill on Staten Island for sorting and processing. These efforts were overseen by Mayor Rudy Giuliani and officially concluded with a commemorative event held on May 30, 2002.

In early 2002, reconstruction commenced on a new building for 7 World Trade Center located north of the main site. Since this area lay outside of the primary master plan zone, its rebuilding progressed without interruption but was designed to integrate with future developments by reopening Greenwich Street through the complex. A temporary PATH station began service in November 2003 and was later replaced in 2016 by a permanent station designed by Santiago Calatrava.

Planning

In the aftermath of the attacks, a coalition of architects and urban planners gathered to deliberate on how to reconstruct the site. Outgoing Mayor Giuliani championed the idea of a "soaring memorial" as the exclusive feature at the World Trade Center location, whereas leaseholder Larry Silverstein prioritized swift rebuilding to secure insurance payouts linked to restoring the lost office spaces. Governor George Pataki, who shared control of the Port Authority with New Jersey’s governor, sought to mediate between these conflicting objectives.

By November 2001, Pataki had created the Lower Manhattan Development Corporation (LMDC) to manage the reconstruction efforts. The LMDC coordinated federal funding and engaged with various parties including Silverstein, the Port Authority, local communities, businesses, and families affected by the tragedy. Although its legal authority was somewhat unclear due to property ownership complexities, the LMDC operated under a 16-member board appointed by both the governor and mayor, asserting its role in revitalizing Lower Manhattan.

In early 2002, the LMDC initially invited 24 architectural firms to submit redesign proposals but soon retracted this call. Subsequently, Beyer Blinder Belle was appointed as planner and presented six design options in July 2002; however, public reaction found these concepts unsatisfactory. This led to an international open design competition that selected seven semifinalist teams: Foster and Partners; Studio Daniel Libeskind; Meier Eisenman Gwathmey Holl (dubbed "The Dream Team"); Peterson Littenberg; Skidmore, Owings & Merrill (SOM); THINK Team; and United Architects.

The semifinalists showcased their designs in December 2002 during public presentations. SOM withdrew afterward. Before finalists were named in February 2003, Silverstein voiced his disapproval of all semifinalists and endorsed SOM as his preferred master planner. Despite this, the LMDC chose THINK Team and Studio Daniel Libeskind as finalists. Governor Pataki later overturned an LMDC vote favoring THINK Team and appointed Libeskind as master planner.

Libeskind’s initial "Memory Foundations" concept evolved through collaboration with Silverstein and SOM. Centered on the 1,776-foot One World Trade Center tower, it incorporated a memorial alongside multiple office buildings. In January 2004, Michael Arad and Peter Walker’s "Reflecting Absence" was selected through the World Trade Center Site Memorial Competition as the official memorial design.

While Libeskind crafted the overall site plan, individual towers were designed by separate architects. Crucially, his plan designated that the original Twin Towers’ footprints would be preserved as a memorial rather than commercial development. This decision triggered intricate negotiations wherein Silverstein ceded rights to those footprints in exchange for development rights on five new office towers surrounding the memorial—a deal regarded as one of the most complex real estate transactions ever due to numerous stakeholders and complicated legal issues.

A pivotal element enabling advancement was the establishment of a public-private partnership between Silverstein and the Port Authority, which aligned interests and clarified responsibilities among all involved parties.

Controversy and criticism

Disputes over ownership and redevelopment strategies caused prolonged delays in Ground Zero’s reconstruction. Public opinion polls frequently showed support for rebuilding towers resembling the originals; concurrently, proposals such as Twin Towers II advocated for taller replacements. Conversely, some groups pushed for dedicating the site solely as a memorial. Ultimately, a master plan was adopted featuring a museum and memorial at the original tower footprints encircled by six new skyscrapers.

The North Tower previously housed Windows on the World, a celebrated restaurant and wine school popular among tourists and locals alike. Although there were commitments to restore these amenities, plans were scrapped by the Port Authority, drawing criticism from various observers.

A 2010 episode of 60 Minutes spotlighted Ground Zero’s sluggish progress characterized by evolving designs, construction delays, and mounting expenses. Investor Larry Silverstein remarked that despite billions invested, completion remained distant with projections extending to 2037—35 years after reconstruction commenced—expressing frustration over this extended timeline.

One World Trade Center encountered early backlash for its asymmetrical and initially shorter design paired with an off-center spire that necessitated redesigns. Additionally, its heavily fortified base lacking windows was criticized for appearing uninviting until prismatic glass panels were introduced. The building’s renaming from Freedom Tower to One World Trade Center also sparked controversy; former New York Governor George Pataki insisted on preserving the "Freedom Tower" name.

Initial construction phase and finalization of plans

Although the World Trade Center's design was completed in 2005, extensive revisions followed after the NYPD expressed security concerns, resulting in a two-year delay in the overall construction schedule. Modifications to the World Trade Center Transportation Hub, such as doubling the number of support columns, further postponed its completion. Initially, construction of the National September 11 Memorial & Museum was planned to commence only after the hub's completion since the hub’s roof was intended to support the memorial and museum walls. However, due to setbacks and pressure from victims’ families to have the memorial ready by the tenth anniversary of the attacks, priorities shifted to building the memorial first. This change delayed the transportation hub and increased costs to approximately $3.4 billion. That same year, plans for a performing arts center were also announced.

In 2006, ownership of One World Trade Center transferred from Silverstein Properties to the Port Authority, which appointed Tishman Construction Corporation as construction manager. Debris removal and site surveying began on March 13, 2006, marking the official start of memorial construction despite protests from some family members. In April 2006, an agreement was reached between the Port Authority and Silverstein Properties wherein development rights for Towers One and Five were transferred to the Port Authority in exchange for Liberty Bond financing allocated for Towers Two, Three, and Four. The groundbreaking ceremony for the Freedom Tower took place on April 27, 2006. The tower was designed to reach 1,368 feet—the same height as the original North Tower—with a spire extending to 1,776 feet symbolizing the year of American independence.

In May 2006, architects Richard Rogers and Fumihiko Maki were appointed to design Towers Three and Four respectively, with Adamson Associates serving as architect of record. By September 2006, final designs for Towers Two (200 Greenwich Street), Three (175 Greenwich Street), and Four (150 Greenwich Street) were revealed, featuring heights ranging from 946 feet to 1,350 feet including their spires. The new Seven World Trade Center reopened on May 23, 2006, becoming the first tower restored; this was vital for reactivating Con Edison’s electrical substation that supports power distribution in Lower Manhattan.

On June 22, 2007, the Port Authority announced that JPMorgan Chase would develop Five World Trade Center—a 42-story building replacing the Deutsche Bank Building—with Kohn Pedersen Fox selected as architect. Renowned architects such as Santiago Calatrava (transit hub), David Childs (One WTC), and Norman Foster (Tower Two) contributed designs aimed at enhancing street-level engagement. However, JPMorgan’s acquisition of Bear Stearns in March 2008 disrupted plans for Five World Trade Center as corporate priorities shifted and headquarters relocated elsewhere.

Groundbreaking for Three World Trade Center took place in fall 2008; by May 2009, the Port Authority proposed reducing its planned height to four stories. Construction on One World Trade Center continued despite challenges including proximity to a subway line which complicated foundation work. By 2010, One WTC had risen to street level and progressed at an approximate rate of one floor per week thereafter. The announcement in 2010 that publisher Condé Nast would relocate its headquarters there helped attract additional tenants.

The St. Nicholas Greek Orthodox Church destroyed in 2001 was originally planned for relocation off-site. In July 2008, the Port Authority purchased its site for $20 million with intentions to move it but reversed this decision in 2009, leading to a lawsuit filed by the Greek Orthodox Diocese over failure to rebuild. This legal dispute was resolved with an agreement signed on October 14, 2011, committing to reconstructing the church.

Notable advancements

By August 2011, One World Trade Center had reached 80 floors, with glass panels installed up to the 54th level; Tower Four had risen to approximately 38 stories, featuring glass installation up to the 15th floor. The former Deutsche Bank Building was completely dismantled, while the Port Authority progressed with the Vehicle Security Center's construction. The memorial for September 11 victims opened exclusively to families on September 11, 2011, and welcomed the general public on September 12. That same month marked the start of foundation work for 5 WTC. By December, foundations for 2 WTC were finalized and framing began, with strong interest from both American and Chinese firms hinting at an earlier-than-expected completion.

In January 2012, Silverstein postponed above-ground work on 4 WTC indefinitely due to a shortage of tenants, initially planning only seven floors. One World Trade Center topped out in August 2012; its spire was transported from Quebec and installation commenced on December 12, 2012. The September 11 Museum encountered setbacks caused by financial disagreements and damage sustained during Hurricane Sandy in November 2012.

Throughout 2013, installation of One WTC’s spire continued until May. Construction on 2 WTC reached street level mid-year but halted pending tenant commitments. Meanwhile, work on 3 WTC’s foundations and podium advanced steadily, concluding by October. Tower Four officially opened in November as the first Port Authority-owned building completed since 7 World Trade Center, initially housing government tenants. While the foundation for 5 WTC was finished, main construction stalled due to lack of leasing interest. In December, Australian retail leader Westfield Group invested $800 million to assume full control over the retail portions at the complex by acquiring the Port Authority’s share. Late in 2013, construction of Liberty Park began with a $50 million funding injection from the Port Authority.

The September 11 Museum welcomed families starting April 15, 2014, followed by public access six days later; at that time, restrictions at the memorial were lifted. Construction resumed on 3 WTC in August with a projected completion date set for 2018. Plans for the Performing Arts Center were canceled in September despite scheduled construction for December. The St. Nicholas Greek Orthodox Church celebrated its cornerstone laying in October with an anticipated two-year timeline to completion. One World Trade Center officially opened on November 3, hosting Condé Nast as its anchor tenant’s initial workforce.

By June 2015, plans for rooftop spires atop Towers Two and Three were scrapped to unify roof designs across all towers.

The World Trade Center Transportation Hub launched on March 3, 2016—significantly delayed and over budget. Liberty Park followed with its opening on June 29; Westfield World Trade Center unveiled its first retail stores within the hub on August 16. The Performing Arts Center was renamed in honor of billionaire Ronald Perelman after his $75 million contribution; a design concept was revealed in September. Construction of Tower Three topped out in October; St. Nicholas Church achieved its ceremonial topping out in November.

Funding disagreements postponed the Performing Arts Center’s construction announced in March 2017; underground garage work began that August with building expected between 2018 and 2020. Also that month, the Port Authority relocated The Sphere sculpture back to Liberty Park near its original placement after years spent in Battery Park. On the sixteenth anniversary of the attacks, analysts observed substantial progress—highlighting near completion of One and Three WTC—while Towers Two and Five still lacked definitive completion timelines; St. Nicholas Church and the Performing Arts Center remained under development.

On June 11, 2018, Tower Three officially opened as the fourth finished skyscraper at the site. The WTC Cortlandt subway station reopened in September after nearly seventeen years of closure following the attacks. A ribbon-cutting ceremony for the Perelman Performing Arts Center took place on September 13, 2023.

Structures

The new World Trade Center complex consists of six buildings, the 9/11 Memorial and Museum, a shopping center, a transportation hub, parking facilities, a park, a church, and a performing arts center. As of January 2022, the construction status of these elements is detailed below:

Name	Construction Start Date	Completion Date	Height	Status
One World Trade Center	2006-04-27	2014-11-03	1,776 feet (541 m)	Finished
2 World Trade Center	2008-11-10	Unknown (anticipated 2027)	1,348 feet (411 m)	Base completed; construction paused
3 World Trade Center	2010-11-10	2018-06-11	1,070 feet (330 m)	Finished
4 World Trade Center	2008-01-22	2013-11-13	978 feet (298 m)	Finished
5 World Trade Center	Planned start: 2025	Unknown	902 feet (275 m)	Approved for development
7 World Trade Center	2002-05-07	2006-05-23	745 feet (227 m)	Finished

Other completed components include the National September 11 Memorial and Museum (opened in 2011 and 2014 respectively), the World Trade Center Transportation Hub (completed in 2016), Ronald O. Perelman Performing Arts Center (finished in 2023), Vehicular Security Center (completed in 2017), Liberty Park (opened in 2016), St. Nicholas Greek Orthodox Church (completed in 2022), and Fiterman Hall at Borough of Manhattan Community College (finished in 2012).

Buildings

The focal point of Daniel Libeskind's master plan is One World Trade Center, previously known as the "Freedom Tower." This skyscraper stands at , mirroring the original North Tower’s height, with its spire reaching a symbolic , representing the year of American independence. The project was a joint effort between Studio Daniel Libeskind and architect David Childs of Skidmore, Owings & Merrill, who acted as design architect and project manager. The tower officially opened on November 3, 2014.

2 World Trade Center, also referred to as 200 Greenwich Street, was designed by British architect Norman Foster, with Adamson Associates serving as architect of record. While construction reached street level by mid-2013, further work is currently paused awaiting tenant agreements.

Situated at 175 Greenwich Street, 3 World Trade Center was designed by the Richard Rogers Partnership alongside Adamson Associates as architect of record. Its foundations and podium were completed by October 2013. Following a two-year halt, vertical construction recommenced in August 2014, culminating in its opening on June 11, 2018.

4 World Trade Center, located at 150 Greenwich Street and designed by Fumihiko Maki, opened its doors in November 2013. It was the second tower to be completed within the site and the first to open on Port Authority-owned land.

The planned 5 World Trade Center, set to occupy the former Deutsche Bank Building site, was initially designed by Kohn Pedersen Fox. Though its foundation was finalized in 2013, full-scale construction has not yet started.

Positioned outside Port Authority property boundaries, 7 World Trade Center was designed by David Childs of Skidmore, Owings & Merrill. This 52-story building opened on May 23, 2006, becoming the first tower in the complex to reopen and earning LEED Gold certification for its sustainability features.

Memorial and Museum

The Reflecting Absence memorial pays tribute to those lost in the September 11 attacks and the 1993 World Trade Center bombing. Conceived by landscape architect Peter Walker alongside Israeli-American architect Michael Arad, the design presents a grove of trees interrupted by the footprints of the former twin towers, which contain pools of water beneath which a space commemorating victims' names is situated. The exposed slurry wall, a key element from Libeskind's original vision, remains visible on-site. Walker and Arad were selected from a pool exceeding 5,000 submissions in the 2004 World Trade Center Site Memorial Competition.

On October 12, 2004, Gehry Partners LLP together with Norway’s Snøhetta were appointed to create the performing arts and museum complexes adjacent to the memorial. The museum, designed by Snøhetta, now functions as both a memorial museum and visitors' center following objections to its initially planned occupant, the International Freedom Center. Separately, the Ground Zero Museum Workshop operates as an independent nonprofit entity and is not connected with either the official memorial or Gehry’s museum.

Construction of the memorial concluded by early 2011, with its inauguration on September 11, 2011, marking a decade since the attacks. The museum’s debut, originally slated for September 11, 2012, encountered delays due to funding disputes and damages sustained during Hurricane Sandy before officially opening in May 2014.

Retail Space and Mall

Westfield World Trade Center launched its first retail outlets on August 16, 2016. It encompasses roughly 365,000 square feet of commercial space, positioning it as Manhattan’s largest shopping mall. Although it occupies about half of the original mall’s footprint—due to the National September 11 Memorial & Museum located below—the new complex features two retail levels compared to the single level of its predecessor. Additionally, retail areas span three above-ground floors in both 2 and 3 World Trade Center buildings, while 4 World Trade Center offers four levels dedicated to retail. The Oculus, which serves as the headhouse for the World Trade Center transportation station, also incorporates substantial retail offerings.

Transportation Hub

Conceived by architect Santiago Calatrava, the World Trade Center Transportation Hub replaced the former PATH station at this location. It links the PATH system with the WTC Cortlandt subway station on the IRT Broadway–Seventh Avenue Line, Battery Park City Ferry Terminal, Brookfield Place, and One World Trade Center to the west; while providing connections eastward via Fulton Center to various subway lines. Both the station and nearby memorial benefit from cooling systems that utilize Hudson River water through a heat exchanger. The hub’s construction cost escalated to an estimated $3.44 billion, sparking debate over its substantial expenditures.

Officially opening on March 3, 2016, the hub was completed several years behind schedule and significantly over its initial budget.

Performing Arts Center

The Performing Arts Center at the World Trade Center was first announced in 2004, with Gehry Partners LLP and Snøhetta initially selected as designers. Construction was originally scheduled to commence in December 2014 following the removal of the temporary PATH station; however, these plans were abandoned in September 2014. In 2015, Joshua Prince-Ramus secured the design contract for the project. A significant $75 million donation from billionaire Ronald Perelman in June 2016 led to the center being named in his honor. A new architectural design was unveiled in September 2016. Work on the underground parking garage started in 2017, with construction of the main building beginning a year later. The center officially opened its doors on September 13, 2023.

Covering 129,000 ft² over three levels, the Performing Arts Center features a public floor at street level that includes a restaurant and bar for patrons during intermissions. The second floor contains rehearsal spaces and dressing rooms, while the third houses three theaters with seating capacities ranging from 99 to 450. These theaters are equipped with movable walls that can be adjusted to merge into a single large venue accommodating around 1,200 attendees.

Liberty Park and constituent structures

Liberty Park is an elevated landscaped area situated atop the Vehicular Security Center parking facility at the southwest corner of the site. Construction began in 2013 after completion of the security center. In December 2013, the Port Authority of New York and New Jersey allocated approximately $50 million for the park’s development. Liberty Park officially opened on June 29, 2016. On August 16, 2017, the Port Authority placed the renowned sculpture The Sphere within the park, positioned to overlook its original location at the World Trade Center.

The St. Nicholas Greek Orthodox Church, which was destroyed during the events of September 11, was initially slated for relocation but is now being reconstructed within Liberty Park. In 2008, the Port Authority purchased the church’s original 1,200 sq ft site for $20 million to facilitate its rebuilding elsewhere. Following legal disputes and a lawsuit by the Greek Orthodox Diocese against the Port Authority over failure to rebuild, an agreement was reached in October 2011 to proceed with reconstruction. Groundbreaking took place in October 2014 with an anticipated two-year timeline; however, work stopped in December 2017 due to unpaid bills and resumed in August 2020. The church reopened fully for regular services on December 6, 2022, coinciding with the Feast of Saint Nicholas.

Spanning about one acre and approximately 300 feet long, Liberty Park sits roughly 20 feet above street level and can accommodate up to 750 visitors. Its features include a green wall along Liberty Street, a curved pathway connecting from a pedestrian bridge, three staircases, a straight ramp leading to Greenwich Street, wooden benches, and an amphitheater-style elevated area near West Street. Observation decks run along Liberty Street and near the church entrance to enhance visitor engagement.

Fiterman Hall

The original Fiterman Hall opened in 1959 as an office building occupying a full block bordered by Greenwich Street, Barclay Street, West Broadway, and Park Place. It was donated to Borough of Manhattan Community College (BMCC) in 1993 by Miles and Shirley Fiterman, whose name it bears. In 2000, extensive renovations began under the New York State Dormitory Authority—the building’s owner—to convert it into classroom space.

During the September 11 attacks in 2001, Fiterman Hall suffered extensive structural damage caused by debris from the collapse of 7 World Trade Center. Renovation efforts were halted; subsequently, the building was condemned and demolished in 2008. After several delays, construction on a new facility designed by Pei Cobb Freed & Partners commenced in December 2009 and was completed by 2012. This $259 million project restored BMCC’s educational presence in Lower Manhattan.

Logo

Introduced in August 2014, the World Trade Center’s emblem was crafted by Landor Associates and takes the form of a stylized "W" with multiple layers of meaning:^[1]

The five vertical segments signify the towers within the completed World Trade Center complex.
The uppermost bars are angled at 17.76 degrees, symbolizing the height of One World Trade Center.
Two white vertical elements represent the Tribute in Light installation honoring the fallen.
Three black bars recall the distinctive trident-style columns of the original Twin Towers.
At the base, two black bars stand for the dual pools featured in the National September 11 Memorial & Museum.
The entire "W" shape embodies both "World Trade Center" and "Westfield World Trade Center."

In 2013, Landor Associates was awarded a contract valued at $3.57 million to design comprehensive wayfinding systems, signage, operational messaging, as well as this new logo.^[2] While Douglas Riccardi from Memo applauded the emblem’s intricate symbolism, he also pointed out that its complexity could potentially limit public recognition.^[1]

External links

Official World Trade Center website
World Trade Center – Silverstein Properties
World Trade Center – Port Authority of New York & New Jersey

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↑ Port Authority of New York and New Jersey, 2013

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[2] Port Authority of New York and New Jersey, 2013

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