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4 World Trade Center (4 WTC; also known as 150 Greenwich Street) is a
skyscraper A skyscraper is a tall continuously habitable building having multiple floors. Most modern sources define skyscrapers as being at least or in height, though there is no universally accepted definition, other than being very tall high-rise bui ...
constructed as part of the new World Trade Center in
Lower Manhattan Lower Manhattan, also known as Downtown Manhattan or Downtown New York City, is the southernmost part of the Boroughs of New York City, New York City borough of Manhattan. The neighborhood is History of New York City, the historical birthplace o ...
,
New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
. The tower is located on
Greenwich Street Greenwich Street is a north–south street in the New York City borough (New York City), borough of Manhattan. It extends from the intersection of Ninth Avenue (Manhattan), Ninth Avenue and Gansevoort Street in the Meatpacking District, Manha ...
at the southeastern corner of the
World Trade Center site The World Trade Center site, often referred to as " Ground Zero" or "the Pile" immediately after the September 11 attacks, is a 14.6-acre (5.9 ha) area in Lower Manhattan in New York City. The site is bounded by Vesey Street to the north ...
.
Fumihiko Maki was a Japanese architect. In 1993, he received the Pritzker Prize for his work, which often explores pioneering uses of new materials and fuses the cultures of east and west. Maki died on 6 June 2024, at the age of 95. Early life Maki was born ...
designed the building. It houses the headquarters of the
Port Authority of New York and New Jersey The Port Authority of New York and New Jersey, (PANYNJ; stylized, in logo since 2020, as Port Authority NY NJ) is a joint venture between the U.S. states of New York (state), New York and New Jersey, established in 1921 through an interstate c ...
(PANYNJ). The current 4 World Trade Center is the second building at the site to bear this address. The original building was a nine-story structure at the southeast corner of the World Trade Center complex. It was destroyed during the
September 11 attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
in 2001, along with the rest of the World Trade Center. The current building's groundbreaking took place in January 2008, and it opened to tenants and the public on November 13, 2013. The building has of space.


Site

4 World Trade Center is at 150
Greenwich Street Greenwich Street is a north–south street in the New York City borough (New York City), borough of Manhattan. It extends from the intersection of Ninth Avenue (Manhattan), Ninth Avenue and Gansevoort Street in the Meatpacking District, Manha ...
, within the new World Trade Center (WTC) complex, in the
Financial District A financial district is usually a central area in a city where financial services firms such as banks, insurance companies, and other related finance corporations have their headquarters offices. In major cities, financial districts often host ...
neighborhood of
Lower Manhattan Lower Manhattan, also known as Downtown Manhattan or Downtown New York City, is the southernmost part of the Boroughs of New York City, New York City borough of Manhattan. The neighborhood is History of New York City, the historical birthplace o ...
in
New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
. The
land lot In real estate, a land lot or plot of land is a tract or parcel of land owned or meant to be owned by some owner(s). A plot is essentially considered a parcel of real property in some countries or immovable property (meaning practically the sam ...
is bounded by Greenwich Street to the west, Cortlandt Way to the north, Church Street to the east, and Liberty Street to the south. Within the World Trade Center complex, nearby structures include St. Nicholas Greek Orthodox Church and Liberty Park to the southwest; the
National September 11 Memorial & Museum The National September 11 Memorial & Museum (also known as the 9/11 Memorial & Museum) is a memorial and museum that are part of the World Trade Center complex, in New York City, created for remembering the September 11 attacks in 2001 which k ...
to the west;
One World Trade Center One World Trade Center, also known as One WTC and as the Freedom Tower, is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. Designed by David Childs of Skidmore, Owings & Merrill, One World Tr ...
to the northwest; and the World Trade Center Transportation Hub. 2 World Trade Center, and
3 World Trade Center 3 World Trade Center (3 WTC; also known as 175 Greenwich Street) is a skyscraper constructed as part of the new World Trade Center (2001–present), World Trade Center in Lower Manhattan, New York City. The tower is located on Greenwich Street ...
to the north. Outside World Trade Center, nearby buildings include
195 Broadway 195 Broadway, also known as the Telephone Building, Telegraph Building, or Western Union Building, is an early skyscraper on Broadway (Manhattan), Broadway in the Financial District, Manhattan, Financial District of Manhattan in New York City. T ...
and the Millennium Hilton New York Downtown hotel to the northeast; the
American Stock Exchange Building The American Stock Exchange Building, formerly known as the New York Curb Exchange Building and also known as 86 Trinity Place or 123 Greenwich Street, is the former headquarters of the American Stock Exchange. Designed in two sections by Starre ...
to the south;
One Liberty Plaza One Liberty Plaza, formerly the U.S. Steel Building, is a skyscraper in the Financial District of Lower Manhattan in New York City. It is situated on a block bounded by Broadway, Liberty Street, Church Street, and Cortlandt Street, on the s ...
to the east; and
Zuccotti Park Zuccotti Park (formerly Liberty Plaza Park) is a publicly accessible park in the Financial District of Lower Manhattan in New York City. It is located in a privately owned public space (POPS) controlled by Brookfield Properties and Goldman S ...
to the southeast.


Original building (1975–2001)

The original 4 World Trade Center was a nine-story low-rise office building completed in 1975 that was 118 ft (36 m) tall, and located in the southeast corner of the World Trade Center site. The building was designed by
Minoru Yamasaki was an American architect, best known for designing the original World Trade Center in New York City and several other large-scale projects. Yamasaki was one of the most prominent architects of the 20th century. He and fellow architect Edward ...
and Emery Roth & Sons. The first tenants, the Commodities Exchange Center, started to move into the building in January 1977. On July 1, 1977, the Mercantile Traders finalized the move. The building's major tenants were
Deutsche Bank Deutsche Bank AG (, ) is a Germany, German multinational Investment banking, investment bank and financial services company headquartered in Frankfurt, Germany, and dual-listed on the Frankfurt Stock Exchange and the New York Stock Exchange. ...
(Floor 4, 5, and 6) and the
New York Board of Trade ICE Futures U.S.—known as the New York Board of Trade (NYBOT) until September, 2007— is a physical commodity futures exchange located in New York City. It is a wholly owned subsidiary of Intercontinental Exchange (ICE). History It origi ...
(Floors 7, 8, and 9). The building's side facing Liberty Street housed the entrance to
The Mall at the World Trade Center Westfield World Trade Center is a shopping mall at the World Trade Center (2001–present), World Trade Center complex in Manhattan, New York (state), New York, which is operated and managed by Unibail-Rodamco-Westfield. The mall opened on Augus ...
on the basement concourse level of the WTC. 4 World Trade Center was home to commodities exchanges on what was at the time one of the world's largest trading floors (featured in the
Eddie Murphy Edward Regan Murphy (born April 3, 1961) is an American actor, comedian, and singer. He had his breakthrough as a standup comic before gaining stardom for his film roles; he is widely recognized as one of the greatest comedians of all time. H ...
movie ''
Trading Places ''Trading Places'' is a 1983 American comedy film directed by John Landis and written by Timothy Harris and Herschel Weingrod. Starring Dan Aykroyd, Eddie Murphy, Ralph Bellamy, Don Ameche, Denholm Elliott, and Jamie Lee Curtis, the film te ...
''). These commodities exchanges collectively had 12 trading pits.


Destruction

The World Trade Center's Twin Towers were destroyed during the
September 11 attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
, creating debris that destroyed or severely damaged nearby buildings, such as the original 4 World Trade Center. Much of the southern two-thirds of the building was destroyed, and the remaining north portion virtually destroyed, as a result of the collapse of the South Tower. The structure was subsequently demolished to make way for reconstruction. At the time of the September 11 attacks, the building's commodities exchanges had of silver coins and of gold coins in the basement. The coins in the basement were worth an estimated $200 million. Much of the coins had been removed by November 2001; trucks transported the coins out of the basement through an intact but abandoned section of the Downtown Hudson Tubes. Many coins belonging to the Bank of Nova Scotia were purchased in 2002, repackaged by the Professional Coin Grading Service, and resold to collectors.


Gallery

File:WTC Building Arrangement and Site Plan.svg, Former site plan, with original 4 World Trade Center at the southeast corner. File:WTC Area With Building Numbers 50dpi contrast.jpg, WTC complex and neighboring buildings, on September 23, 2001. Remaining portion of 4 WTC visible at southeast corner. Footprints of the Twin Towers and 7 WTC highlighted. File:4-Wtc-photo.jpg, Site of 4 WTC in NOAA aerial image, oriented with south at left of image (September 23, 2001). Much of 4 WTC is destroyed (entire left of image), with only the damaged northern portion identifiable (at right). File:World Trade Center 3 After 9-11 Attacks With Original Building Locations.jpg, A bird's-eye view of the World Trade Center complex, September 17, 2001, with the original locations of the buildings.


Current building


Site redevelopment

Larry Silverstein had leased the original World Trade Center from the PANYNJ in July 2001. His company
Silverstein Properties Silverstein Properties Inc. is an American family-held, full-service real estate development, investment and management firm based in New York City. Founded in 1957 by Chairman Larry Silverstein, the company specializes in developing, acquiri ...
continued to pay rent on the site even after the September 11 attacks. In the months following the attacks, architects and
urban planning Urban planning (also called city planning in some contexts) is the process of developing and designing land use and the built environment, including air, water, and the infrastructure passing into and out of urban areas, such as transportatio ...
experts held meetings and forums to discuss ideas for rebuilding the site. The architect
Daniel Libeskind Daniel Libeskind (born May 12, 1946) is a Polish–American architect, artist, professor and set designer. Libeskind founded Studio Daniel Libeskind in 1989 with his wife, Nina, and is its principal design architect. He is known for the design a ...
won a competition to design the master plan for the new World Trade Center in February 2003. The master plan included five towers, a 9/11 memorial, and a transportation hub. By July 2004, two towers were planned on the southeast corner of the site: the 62-story 3 World Trade Center and the 58-story 4 World Trade Center. The plans were delayed due to disputes over who would redevelop the five towers. The PANYNJ and Silverstein ultimately reached an agreement in 2006. Silverstein Properties ceded the rights to develop 1 and 5 WTC in exchange for financing with Liberty bonds for 2, 3, and 4 WTC. Japanese architect
Fumihiko Maki was a Japanese architect. In 1993, he received the Pritzker Prize for his work, which often explores pioneering uses of new materials and fuses the cultures of east and west. Maki died on 6 June 2024, at the age of 95. Early life Maki was born ...
was hired to design the new 4 World Trade Center, on the eastern part of the World Trade Center site at 150 Greenwich Street, in May 2006. Meanwhile,
Norman Foster Norman Robert Foster, Baron Foster of Thames Bank (born 1 June 1935) is an English architect. Closely associated with the development of high-tech architecture, Lord Foster is recognised as a key figure in British modernist architecture. Hi ...
and
Richard Rogers Richard George Rogers, Baron Rogers of Riverside (23 July 1933 – 18 December 2021) was a British-Italian architect noted for his modernist and constructivist designs in high-tech architecture. He was the founder at Rogers Stirk Harbour + ...
were selected as the architects for 2 and 3 World Trade Center, respectively. The plans for 2, 3, and 4 World Trade Center were announced in September 2006. 4 World Trade Center would be a 61-story, building. The building would have contained of retail space in its base and of offices. The lower stories would have had a trapezoidal plan, changing to a parallelogram on the upper stories. The lowest stories of 4 World Trade Center and several neighboring buildings would be part of a rebuilt Westfield World Trade Center Mall. The same month, PANYNJ agreed to occupy within 4 WTC, paying , a lower rental rate than what Silverstein had wanted. The city government offered to rent another , thus allowing Silverstein to obtain a mortgage loan for the tower's construction. Silverstein would be allowed to evict the city government if he could rent out the space at
market rate The market rate (or "going rate") for goods or services is the usual price charged for them in a free market. If demand goes up, manufacturers and laborers will tend to respond by increasing the price they require, thus setting a higher market rate ...
. As part of the project, Cortlandt Street (which had been closed to make way for the original World Trade Center) was planned to be rebuilt between 3 and 4 WTC. The plans for Cortlandt Street affected the design of the lower stories of both 3 and 4 WTC, as one of the proposals called for an enclosed shopping atrium along the path of Cortlandt Street, connecting the two buildings. The street was eventually rebuilt as an outdoor path. Final designs for 2, 3, and 4 WTC were announced in September 2007. The three buildings would comprise the commercial eastern portion of the new World Trade Center, contrasting with the memorial in the complex's western section. At the time, construction of 4 WTC was planned to begin in January 2008. As part of its agreement with the PANYNJ, Silverstein Properties was obliged to complete 3 and 4 WTC by the end of 2011.


Construction


Initial progress

In 2007, the PANYNJ started constructing the East Bathtub, a site that was to form the foundations of 3 and 4 WTC. The process involved excavating a trench around the site to a depth of , then constructing a
slurry wall A slurry wall is a civil engineering technique used to build reinforced concrete walls in areas of soft earth close to open water, or with a high groundwater table. This technique is typically used to build diaphragm (water-blocking) walls surro ...
around the site. The PANYNJ was supposed to give the site to Silverstein Properties at the end of 2007; the contractors would have received a $10 million bonus if they had completed the work early. If Silverstein did not receive the site by January 1, 2008, the PANYNJ would pay Silverstein $300,000 per day until the site was transferred. The agency ultimately gave the site to Silverstein on February 17, 2008. The PANYNJ paid a $14.4 million penalty for turning over the site 48 days after the deadline. The PANYNJ voted in early 2008 to extend the deadline for 4 WTC's completion to April 2012. Meanwhile, police officials expressed concern that the building's all-glass design posed a security risk. A study published in early 2009 predicted that 4 WTC, the first of Silverstein's three towers at the World Trade Center site, would not be fully leased until 2014 due to the
2008 financial crisis The 2008 financial crisis, also known as the global financial crisis (GFC), was a major worldwide financial crisis centered in the United States. The causes of the 2008 crisis included excessive speculation on housing values by both homeowners ...
. 4 WTC's construction was temporarily halted that March after city officials found that workers were operating a construction crane without a permit. Disputes between the PANYNJ and Silverstein continued through late 2008, when Silverstein claimed that the agency owed him $300,000 per day for failing to demolish a barrier around the site, as the barrier prevented him from erecting the tower's foundations. The PANYNJ claimed that the barrier was several feet outside the excavation site and that it did not owe Silverstein anything. That December, an arbitration panel ruled that the PANYNJ owed Silverstein an extra $20.1 million. By May 2009, Silverstein wanted the PANYNJ to fund the construction of 2 and 4 WTC, but the PANYNJ was only willing to provide funding for 4 WTC, citing the
Great Recession The Great Recession was a period of market decline in economies around the world that occurred from late 2007 to mid-2009.
and disagreements with Silverstein. At the time, the PANYNJ had leased one-third of 4 WTC's office space, but no tenant had been signed for 2 WTC. Silverstein also held an option to lease space to the city government for , but he was reluctant to exercise the option, since he believed that market-rate rents for the space would increase drastically when the building opened. Silverstein expressed confidence that the building would attract financial tenants since it was close to
Wall Street Wall Street is a street in the Financial District, Manhattan, Financial District of Lower Manhattan in New York City. It runs eight city blocks between Broadway (Manhattan), Broadway in the west and South Street (Manhattan), South Str ...
. Three PureCell
fuel cell A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen fuel, hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most bat ...
s were delivered at the World Trade Center site in November 2010, providing about 30 percent of 4 WTC's power. By the end of that year, the building had reached the tenth story; the project to date had been funded entirely by insurance proceeds.


Funding and completion

A New York state board voted in November 2010 to allow Silverstein to finance 4 WTC and another tower with up to $200 million of bonds from the
American Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (ARRA) (), nicknamed the Recovery Act, was a Stimulus (economics), stimulus package enacted by the 111th U.S. Congress and signed into law by President Barack Obama in February 2009. Developed ...
. Silverstein also wanted to sell $1.36 billion worth of Liberty bonds to fund 4 WTC's completion. Silverstein decided in December 2010 to postpone the bond offering because of instability in the
municipal bond A municipal bond, commonly known as a muni, is a bond issued by state or local governments, or entities they create such as authorities and special districts. In the United States, interest income received by holders of municipal bonds is often ...
market. Early the next year, he exercised his option to lease space to the New York City government. After the muni market stabilized, the PANYNJ planned to vote on the Liberty bond offering in early 2011. The vote was delayed after several institutional investors objected to the fact that the Liberty bonds would have greater
seniority Seniority is the state of being older or placed in a higher position of status relative to another individual, group, or organization. For example, one employee may be senior to another either by role or rank (such as a CEO vice a manager), or by ...
than a bond offering that had previously been placed on the building. If the Liberty bonds were not sold by the end of that year, Silverstein would not have enough money to complete the tower. Meanwhile, during early 2011, the building was constructed at an average rate of one floor per week, and the building had reached the 23rd floor by May 2011. After five months of negotiations, the PANYNJ announced a revised financing plan for the tower in September 2011, in which the Liberty bonds were subordinate to the existing bond offering. The agency started selling Liberty bonds in November 2011. The building's steel frame was built first, followed by the concrete core and the exterior curtain wall. The building had reached the 61st story by the beginning of 2012. A cable on one of the building's construction cranes snapped on February 16, 2012, dropping a steel beam 40 stories; no one was seriously injured, and work resumed shortly afterward. The building's superstructure was
topped out In building construction, topping out (sometimes referred to as topping off) is a builders' rite traditionally held when the last beam (or its equivalent) is placed at the top of a structure during its construction. Nowadays, the ceremony is ofte ...
on June 26, 2012, when workers installed the final steel beam on the 72nd floor. In the two days after the tower's topping-out, there were two construction accidents, neither of which resulted in serious injuries. The building's basements were flooded in late 2012 during
Hurricane Sandy Hurricane Sandy (unofficially referred to as Superstorm Sandy) was an extremely large and devastating tropical cyclone which ravaged the Caribbean and the coastal Mid-Atlantic (United States), Mid-Atlantic region of the United States in late ...
, although the tower was still expected to be completed the following year. Structural steel and concrete completed by June 1, 2013, followed by the removal of construction fencing in September 2013. The building opened on November 13, 2013, along with the neighboring section of Greenwich Street. It was the second tower to open as part of the new World Trade Center, after
7 World Trade Center 7 World Trade Center (7 WTC, WTC-7, or Tower 7) is an office building constructed as part of the new World Trade Center (2001–present), World Trade Center in Lower Manhattan, New York City. The tower is located on a city block bounded by Gr ...
. 4 World Trade Center had cost US$1.67 billion to build, having been funded by insurance payouts and Liberty bonds. At the time, the PANYNJ and the city government were the building's only tenants. Though the two governmental tenants collectively occupied around 60 percent of the building, the ''Financial Times'' reported that some of the space could be subleased. Janno Lieber of Silverstein Properties expressed optimism that the building's design would attract tenants, saying: "We have a building that's going to feel like a tower on Park Avenue." File:The new building.jpg, Construction on March 26, 2011. File:4 WTC construction Aug 2011.jpg, Construction on August 7, 2011. File:4WTC-Oct 7, 2011.jpg, Construction on October 4, 2011. File:4WTC-March 12, 2012.JPG, Construction on March 12, 2012. File:World Trade Center Three Construction.JPG, Construction on October 17, 2012.


Usage

The first tenants to move in were the PANYNJ and the city government. The New York City government leased of space in the completed building. The PANYNJ leased approximately for its headquarters,150 Greenwich St., Maki and Associates, Architectural Fact Sheet - September 2006
. Retrieved February 9, 2007
having relocated in 2015 from 225 Park Avenue South in
Gramercy Park Gramercy ParkSometimes misspelled as Grammercy () is the name of both a small, fenced-in private park, and the surrounding neighborhood (which is also referred to as Gramercy), in Manhattan in New York City. The approximately park, located ...
, Manhattan. When 4 WTC opened, there was relatively low demand for office space in lower Manhattan, in part because many of the area's financial firms were downsizing their spaces. There was so little demand for office space in the new tower that Silverstein rented out the vacant space for events, charging $50,000 per day for each floor. According to ''
The Wall Street Journal ''The Wall Street Journal'' (''WSJ''), also referred to simply as the ''Journal,'' is an American newspaper based in New York City. The newspaper provides extensive coverage of news, especially business and finance. It operates on a subscriptio ...
'', these included a
Super Bowl The Super Bowl is the annual History of the NFL championship, league championship game of the National Football League (NFL) of the United States. It has served as the final game of every NFL season since 1966 NFL season, 1966 (with the excep ...
commercial, a film shoot for the 2014 movie '' Annie'', and a wine-tasting event. By July 2015, the tower was 62 percent leased. A February 2017 announcement by
Spotify Spotify (; ) is a List of companies of Sweden, Swedish Music streaming service, audio streaming and media service provider founded on 23 April 2006 by Daniel Ek and Martin Lorentzon. , it is one of the largest providers of music streaming services ...
that it would lease floors 62 through 72 for its United States headquarters, along with a subsequent expansion announcement that July, brought 4 World Trade Center to full occupancy.
SportsNet New York SportsNet New York (SNY) is an American regional sports network owned by Sterling Entertainment Enterprises, LLC, itself a joint venture between Fred Wilpon's Sterling Equities (which owns a controlling 65% interest), Charter Communications th ...
, carrier of
New York Mets The New York Mets are an American professional baseball team based in the Boroughs of New York City, New York City borough of Queens. The Mets compete in Major League Baseball (MLB) as a member club of the National League (baseball), National ...
broadcasts, moved its headquarters from
1271 Avenue of the Americas 1271 Avenue of the Americas (formerly known as the Time & Life Building) is a 48-story skyscraper on Sixth Avenue (Avenue of the Americas), between 50th and 51st streets, in the Midtown Manhattan neighborhood of New York City. Designed ...
to an facility in 4 WTC. The SportsNet New York studios in 4 WTC also double as the New York City studios for
NFL Network NFL Network (occasionally abbreviated on-air as NFLN) is an American sports-oriented pay television network owned by the National Football League NTP and is part of NFL Media, which also includes NFL.com, NFL Films, NFL Mobile, NFL Now and N ...
, hosting their morning show '' Good Morning Football''. Silver Art Projects, a nonprofit organization operated by Larry Silverstein's grandson Cory Silverstein, opened 28 art studios on the 28th floor in 2020. Twenty-five of the studios are reserved for the program's artists, who are selected through an annual application process and occupy each studio for free, while the remaining three studios are for the program's mentors.


Architecture

4 WTC is described as being either or tall, with of office space.


Form and facade

The facade is a curtain wall with glass panes that span the full height of each story. The facade consists of glass panes measuring wide and tall. Most of the facade is made of reflective glass, except at the lobby, where the facade is made of clear glass. Five of the lowest stories are mechanical floors and contain narrow vertical louvers. The western facade of the tower, which faces the National September 11 Memorial, does not have louvers. The ''New York Daily News'' wrote that Maki and Associates wanted the building's design to "pay deference to the memorial".
Jaros, Baum & Bolles Jaros, Baum & Bolles Consulting Engineers, LLP (JB&B) is an American MEP ( Mechanical, electrical, and plumbing) and consulting engineering firm founded in 1915 by Alfred L. Jaros, Jr. and Albert L. Baum. The firm is best known for high-rise proj ...
was the MEP engineer. According to ''
Engineering News-Record The ''Engineering News-Record'' (widely known as ''ENR'') is an American weekly magazine that provides news, analysis, data and opinion for the construction industry worldwide. It is widely regarded as one of the construction industry's most au ...
'', Maki and Associates had designed 4 WTC as a "minimalist tower with an abstract sculptural presence". The upper floors accommodate offices using two distinct floor shapes. Floors 7 to 46 each span and are parallelogram in plan, reflecting the shape of the World Trade Center site. the shape of a
parallelogram In Euclidean geometry, a parallelogram is a simple polygon, simple (non-list of self-intersecting polygons, self-intersecting) quadrilateral with two pairs of Parallel (geometry), parallel sides. The opposite or facing sides of a parallelogram a ...
. Floors 48 to 63 each cover and are trapezoidal in plan. At the two obtuse angles of the parallelogram, there are deep grooves along the facade. The top story contains a penthouse office.


Structural features

The structural engineer for the building is Leslie E. Robertson Associates, founded by Robertson, the chief engineer for the original Twin Towers in the 1960s. The tower's foundation is composed of concrete footings that descend to the underlying
bedrock In geology, bedrock is solid rock that lies under loose material ( regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bed ...
. When the original World Trade Center was developed, the contractors found that there was a gap in the bedrock at the southeast corner of the site. Although the bedrock under most of the site is deep, the southeast corner contains a
pothole A pothole is a pot-shaped depression in a road surface, usually asphalt pavement, where traffic has removed broken pieces of the pavement. It is usually the result of water in the underlying soil structure and traffic passing over the affecte ...
, where the bedrock descends to because of erosion during the Last Glacial Period. The current tower's foundation is surrounded by a slurry wall. The slurry wall is largely anchored to the bedrock, except at the southeast corner of the site, where the pothole made this impossible. DCM Erectors manufactured the steel for the building's
superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...
. The superstructure consists of a steel frame weighing . In addition, the building uses of concrete and of
rebar Rebar (short for reinforcement bar or reinforcing bar), known when massed as reinforcing steel or steel reinforcement, is a tension device added to concrete to form ''reinforced concrete'' and reinforced masonry structures to strengthen and aid ...
. The center of the tower contains a mechanical core made of
reinforced concrete Reinforced concrete, also called ferroconcrete or ferro-concrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ...
, which includes mechanical equipment, stairs, and elevators. Schindler manufactured the building's elevators, which operate at a speed of . The retail space on the lower stories contains six escalators, two passenger elevators, and two freight elevators. The upper stories are served by 37 elevators, which consist of 34 passenger elevators and three service elevators.


Interior


Lower stories

Six floors are used for retail. They consist of the ground floor, the three floors immediately above the ground floor as well as the two floors below ground. The retail space occupies the eastern part of the ground floor. The lower levels of the building are used by retail businesses, including Eataly. These are connected via an underground shopping mall and concourse, connecting to the
PATH A path is a route for physical travel – see Trail. Path or PATH may also refer to: Physical paths of different types * Bicycle path * Bridle path, used by people on horseback * Course (navigation), the intended path of a vehicle * Desir ...
and the
New York City Subway The New York City Subway is a rapid transit system in New York City serving the New York City boroughs, boroughs of Manhattan, Brooklyn, Queens, and the Bronx. It is owned by the government of New York City and leased to the New York City Tr ...
via the World Trade Center Transportation Hub. The building's ground-floor lobby is two stories high, with a ceiling. The lobby occupies the western part of the ground floor, facing the National September 11 Memorial. The space contains wood-beamed ceilings, white-granite floors, and Swedish black granite walls. Suspended from the lobby's ceiling is Kozo Nishino's sculpture ''Sky Memory'', which consists of seven pieces of
titanium Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...
trusses collectively weighing . ''Sky Memory'' measures across and hangs above the floor. The lobby also contains ''Vandal Gummy'', a sculpture of a bear by street artist WhIsBe. The artist Ivan Navarro designed an LED sculpture near the bottom of the lobby's escalators. Leading from the lobby are three hallways, where
video art Video art is an art form which relies on using video technology as a visual and audio medium. Video art emerged during the late 1960s as new consumer video technology such as video tape recorders became available outside corporate broadcasting. V ...
is displayed on wood-paneled walls. ''The Wall Street Journal'' wrote that 4 WTC's lobby "will be the largest lobby by volume in New York".


Critical reception

When the building was being constructed, David W. Dunlap of ''The New York Times'' wrote that 4 WTC was "the biggest skyscraper New Yorkers have never heard of". ''The Wall Street Journal'' wrote that the lobby "offers a grand front to the World Trade Center Memorial" and that the effect of the lobby's design "is intriguingly calming for a building soon to rest at the heart of the Financial District." Upon the tower's opening, Daniel Libeskind wrote: "The WTC site has emerged from 12 years of contention and construction to become what we all hoped it would be: a place that will show the world everything that is great about cities, especially New York."


See also

*
List of tallest buildings in New York City {{Location map+ , Manhattan#New York City , float= center , width= 280 , caption = Location of all skyscrapers in New York City taller than {{convert, 650, ft, m, 0 , alt= , places = { ...
*
Marriott World Trade Center The New York Marriott World Trade Center, also known as 3 World Trade Center (3 WTC), was a 22-story, 825-room hotel in New York City, within the original World Trade Center complex in downtown Manhattan. It opened in April 1981 as the Vista I ...


References


External links


4WTC.com - 4 World Trade Center - 150 Greenwich Street
- Official site * {{Financial District, Manhattan World Trade Center Fumihiko Maki buildings Skyscraper office buildings in Manhattan Office buildings completed in 2013 2013 establishments in New York City 2010s architecture in the United States