The original World Trade Center (WTC) was a complex of seven buildings in the Financial District of Lower Manhattan in New York City. Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed on September 11, 2001, after two hijacked planes were flown into the towers in a coordinated terrorist attack. The complex included the 110-story-tall Twin Towers, the tallest buildings in the world at the time of completion—with the original 1 World Trade Center (the North Tower) at , and 2 World Trade Center (the South Tower) at —and the tallest twin skyscrapers in the world until the Petronas Towers opened in 1996. The other buildings in the complex were the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC. The complex contained of office space and, prior to its completion, was projected to accommodate an estimated 130,000 people.
The core complex cost about $400 million (equivalent to $ billion in ). David Rockefeller suggested the construction of a large office building complex to help stimulate urban renewal in Lower Manhattan, and his brother Nelson, at that time New York's 49th governor, signed the legislation to build it. The buildings at the complex were designed by Minoru Yamasaki. In 1998, the Port Authority of New York and New Jersey decided to privatize the complex by leasing the buildings to a private company to manage. It awarded the lease to Silverstein Properties in . During its existence, the World Trade Center symbolized globalization and the economic power and prosperity of the United States. Although their design was initially criticized by New Yorkers and architectural critics, the Twin Towers became an icon of New York City. They had a major role in popular culture, and according to one estimate were depicted in 472 films. The Twin Towers were also used in Philippe Petit's tightrope-walking performance on August 7, 1974. Following the September 11 attacks, mentions of the complex in various media were altered or deleted, and several dozen "memorial films" were created.
The World Trade Center, a symbol of New York City and a major economic center, was the target of several major crime and terrorist incidents, including a fire on , 1975; a bombing on , 1993; and a bank robbery on , 1998. On September 11, 2001, al-Qaeda-affiliated hijackers flew two Boeing 767 jets, one into each of the Twin Towers, seventeen minutes apart; between 16,400 and 18,000 people were in the Twin Towers when they were struck. The fires from the impacts were intensified by the planes' burning jet fuel, which, along with the initial damage to the buildings' structural columns, ultimately caused both towers to collapse. The attacks killed 2,606 people in and around the towers, as well as all 157 on board the two aircraft (including the 10 hijackers). Falling debris from the towers, combined with fires in several surrounding buildings that were initiated by falling debris, led to the partial or complete collapse of all the WTC complex's buildings, including 7 World Trade Center, and caused catastrophic damage to 10 other large structures in the surrounding area.
The cleanup and recovery process at the World Trade Center site took eight months, during which the remains of the other buildings were demolished. On May 30, 2002, the last piece of WTC steel was ceremonially removed. A new World Trade Center complex is being built with six new skyscrapers and several other buildings, many of which are complete. A memorial and museum to those killed in the attacks, a new rapid transit hub, and an elevated park have opened. The memorial features two square reflecting pools in the center marking where the Twin Towers stood. One World Trade Center, the tallest building in the Western Hemisphere at and the lead building for the new complex, completed construction in May 2013 and opened in November 2014.
Before the World Trade Center
Site The western portion of the World Trade Center site was originally under the Hudson River. The shoreline was in the vicinity of Greenwich Street, which is closer to the site's eastern border. It was on this shoreline, close to the intersection of Greenwich and the former Dey Street, that Dutch explorer Adriaen Block's ship, Tyger, burned to the waterline in November 1613, stranding him 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 beginning in 1797 and was discovered during excavation work in 1916. The remains of a second eighteenth-century ship 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 stood, about below the surface.
Later, the area became New York City's Radio Row, which existed from 1921 to 1966. The neighborhood was a warehouse district in what is now Tribeca and the Financial District. Harry Schneck opened City Radio on Cortlandt Street in 1921, and eventually, the area held several blocks of electronics stores, with Cortlandt Street as its central axis. The used radios, war surplus electronics (e.g., AN/ARC-5 radios), junk, and parts were often piled so high they would spill out onto the street, attracting collectors and scroungers. According to a business writer, it also was the origin of the electronic component distribution business.
Establishment of the World Trade Center The idea of establishing a World Trade Center in New York City was first proposed in 1943. The New York State Legislature passed a bill authorizing New York Governor Thomas E. Dewey to begin developing plans for the project, but the plans were put on hold in 1949. During the late 1940s and 1950s, economic growth in New York City was concentrated in Midtown Manhattan. To help stimulate urban renewal in Lower Manhattan, David Rockefeller suggested that the Port Authority build a World Trade Center there.
Plans for the use of eminent domain to remove the shops in Radio Row bounded by Vesey, Church, Liberty, and West Streets began in 1961 when the Port Authority of New York and New Jersey was deciding to build the world's first world trade center. They had two choices: the east side of Lower Manhattan, near the South Street Seaport; or the west side, near the Hudson and Manhattan Railroad (H&M) station, Hudson Terminal. Initial plans, made public in 1961, identified a site along the East River for the World Trade Center. As a bi-state agency, the Port Authority required approval for new projects from the governors of both New York and New Jersey. New Jersey Governor Robert B. Meyner objected to New York getting a $335 million project. Toward the end of 1961, negotiations with outgoing New Jersey Governor Meyner reached a stalemate.
At the time, ridership on New Jersey's H&M Railroad had declined substantially—from a high of 113 million riders in 1927, to 26 million in 1958—after new automobile tunnels and bridges had opened across the Hudson River. In a meeting between Port Authority director Austin J. Tobin and newly elected New Jersey Governor Richard J. Hughes, the Port Authority offered to take over the H&M Railroad. They also decided to move the World Trade Center project to the Hudson Terminal building site on the west side of Lower Manhattan, a more convenient location for New Jersey commuters arriving via PATH. With the new location and the Port Authority's acquisition of the H&M Railroad, New Jersey agreed to support the World Trade Center project. As part of the deal, the Port Authority renamed the H&M "Port Authority Trans-Hudson", or PATH for short.
To compensate Radio Row business owners for their displacement, the Port Authority gave each business $3,000 without regard to how long the business had been there or how prosperous it was. The Port Authority began purchasing properties in the area for the World Trade Center by March 1965, and demolition of Radio Row began in March 1966. It was completely demolished by the end of the year.
Approval was also needed from New York City Mayor John Lindsay and the New York City Council. Disagreements with the city centered on tax issues, and the New York City Planning Commission wanted the Port Authority to increase its payments in lieu of taxes (PILOT) to the city government. On , 1966, an agreement was reached whereby the Port Authority would make annual PILOTs for the portion of the World Trade Center leased to private tenants. In subsequent years, the payments would rise as the real estate tax rate increased. In May 1967, the New York City Planning Commission approved several changes to the street grid that would allow the Port Authority to begin acquiring land for the complex.
Development
Design
On , 1962, the Port Authority announced the selection of Minoru Yamasaki as lead architect and Emery Roth & Sons as associate architects. Yamasaki devised the plan to incorporate twin towers. His original plan called for the towers to be 80 stories tall, but to meet the Port Authority's requirement for of office space, the buildings would each have to be 110 stories tall. The Port Authority publicly presented a model for the complex on January 18, 1964. The original plans called for two towers rising , as well as several six-story buildings surrounding a central plaza (later the Austin J. Tobin Plaza). These buildings were to include office space, restaurants, a hotel, exhibition space, stores, and an information center about world trade.
The agency released its final model of the complex in March 1966. Despite public criticism over the height of the 110-story twin towers, Yamasaki & Associates and Emery Roth & Sons made only relatively minor changes to the plans, which were released in May 1966. The revised plans called for the twin towers and four additional low-rise structures to surround the central plaza.
Design features Yamasaki's design for the World Trade Center called for a square plan approximately in dimension on each side. The buildings were designed with narrow office windows wide, which reflected Yamasaki's fear of heights as well as his desire to make building occupants feel secure. His design included building facades clad in aluminum-alloy. The World Trade Center was one of the most striking American implementations of the architectural ethic of Le Corbusier and was the seminal expression of Yamasaki's gothic modernist tendencies. He was also inspired by Islamic architecture, elements of which he incorporated in the building's design, having previously designed Saudi Arabia's Dhahran International Airport with the Saudi Binladin Group.
A major limiting factor in building height is the issue of elevators; the taller the building, the more elevators are needed to service it, requiring more space-consuming elevator banks. Yamasaki and the engineers decided to use a new system with two "sky lobbies"—floors where people could switch from a large-capacity express elevator to a local elevator that goes to each floor in a section. This system, inspired by the local-express train operation used in New York City's subway system, allowed the design to stack local elevators within the same elevator shaft. Located on the 44th and 78th floors of each tower, the sky lobbies enabled the elevators to be used efficiently. This increased the amount of usable space on each floor from 62 to 75 percent by reducing the number of elevator shafts. Altogether, the World Trade Center had 95 express and local elevators.