Future of where the twin towers stood.
Progress on the construction of the redesigned site is as follows:
- 1 World Trade Center – Construction began in April 2006; two years later, tower-foundation steel columns, concrete, and rebar had been installed. In 2006, the Port Authority took over from Silverstein Properties as the project’s developer. Tishman Construction Corporation is the construction manager. The estimated completion date is 2013.
- 2 World Trade Center – Groundbreaking in July 2008.
- 3 World Trade Center – Groundbreaking in March 2008. In April 2008, excavation and preparations for foundation work took place.
- 4 World Trade Center – Construction began in 2008.
- 5 World Trade Center – Construction began on January 1, 2009. The Port Authority acts as the building’s developer.
- 7 World Trade Center – Off of Port Authority land, the tower opened on May 23, 2006 and achieved LEED gold status.
- National September 11 Memorial & Museum – Under construction. The Memorial will include a Museum and two square pools where the Twin Towers formerly stood. The Memorial is on schedule for a September 11, 2011 opening, coinciding with the 10th anniversary of the attacks.
- Performing Arts Center
1 World Trade Center
2 World Trade Center
Two World Trade Center is a skyscraper under construction as part of the new World Trade Center at 200 Greenwich Street in New York City. When completed, the tower will be located where the former 5 World Trade Center building was located, on the east side of Greenwich Street, across the street from the original location of the Twin Towers that were destroyed during the September 11 attacks. This tower will be the last to be built.
The 79-story building was designed by Foster and Partners, London. The building will have a height of 387 m, with a tripod-shaped antenna that allows the building to reach a total height of 411 m. In comparison, the Empire State Building’s roof at the 102nd floor is 381 m tall, and its antenna is 448 m, and the original 2 World Trade Center (often referred to as the “South Tower”) was 415 m.
When constructed, the tower will be the second–tallest skyscraper on the World Trade Center site and the third–tallest in New York City, following One World Trade Center and the Empire State Building. The sloping roof consisting of four diamonds inclined toward the memorial will provide a visual marker around the skyline of just where the original towers were. The tower is designed to resemble a diamond, with cross bracing intersects and indentations breaking up the sides. The Port Authority of New York and New Jersey said the following about 200 Greenwich Street’s wedged rooftop: “Designed by Lord Norman Foster, the tower incorporates WTC master planner Daniel Libeskind’s ‘wedge of light’ concept, and will cast no shadow on the memorial park on September 11.”
3 World Trade Center
Three World Trade Center is a skyscraper to become part of the World Trade Center reconstruction in New York City. The office building, which resembles the John Hancock Center in Chicago, will be on the east side of Greenwich Street, across the street from the original location of the Twin Towers that were destroyed during the September 11 attacks. Pritzker Prize-winning architect Lord Richard Rogers (Rogers Stirk Harbour + Partners) was awarded the contract to design the building, which will be 352 m in structural height with a pinnacle height of 378 m.
4 World Trade Center
Four World Trade Center is a skyscraper under construction as part of the new World Trade Center in New York City at 150 Greenwich Street on the east side of Greenwich Street, across from the original location of the Twin Towers that were destroyed during the September 11, 2001 attacks. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the building, which will be 297 m tall. The building’s groundbreaking took place in January 2008, and it is scheduled to be completed by 2012. The structural engineer for the building is Leslie E. Robertson Associates, New York City. As of April 2011, only it and One World Trade Center (the 7 WTC is already totally completed) have progressed to the point where the construction is visible above ground level.
5 World Trade Center
Five World Trade Center,also referred to by its street address, 130 Liberty Street, is a new World Trade Center building to be located in New York City. It will be located on Site 5 of the new World Trade Center complex (former Deutsche Bank Building), but not exactly on the main plot of land as the other four buildings. Originally, it was designed to be a 42 story building to rise about 226 m, but currently this tower’s plan is in “limbo”.
7 World Trade Center (the only one currently completed and opened for business)
The new 7 World Trade Center has 52 stories and is 226 m tall. The first ten floors house an electrical substation, which provides power to much of Lower Manhattan. The office tower has a narrower footprint at ground level than its predecessor so the course of Greenwich Street could be restored to reunite TriBeCa and the Financial District.
David Childs of Skidmore, Owings and Merrill worked in conjunction with glass artist and designer James Carpenter to create a design that uses ultra-clear, low-iron glass to provide reflectivity and light, with stainless-steel spandrels behind the glass to help reflect sunlight. Stainless steel used in the building façade is molybdenum-containing Type 316, which provides improved resistance to corrosion. To enclose the power substation and improve its aesthetics, the base of the building has a curtain wall with stainless steel louvers that provide ventilation for the machinery. During the day, the curtain wall reflects light, while at night it is illuminated with blue LED lights. The curtain wall around the lobby uses heavily laminated, heat-strengthened glass that meets high standards for blast resistance. At night, a large cube of light above the lobby also emanates blue light, while during the day it provides white light to the lobby, and at dusk it transitions to violet and back to blue. Inside the main lobby, artist Jenny Holzer created a large light installation with glowing text moving across wide plastic panels. The entire wall, which is 20 m wide and 4 m tall, changes color according to the time of day.
Nearly 30 percent of structural steel used in the building consists of recycled steel. Rainwater is collected and used for irrigation of the park and to cool the building. Along with other sustainable design features, the building is designed to allow in plenty of natural light, power is metered to tenants to encourage them to conserve energy, the heating steam is reused to generate some power for the building, and recycled materials are used for insulation and interior materials.
National September 11 Memorial & Museum:
In August 2006, the World Trade Center Memorial Foundation and the Port Authority of New York and New Jersey began heavy construction on the National September 11 Memorial & Museum. The Memorial will be located at the World Trade Center site, on the former location of the Twin Towers destroyed during the September 11 attacks in 2001. The World Trade Center Memorial Foundation was renamed the National September 11 Memorial & Museum at the World Trade Center in 2007. The winner of the World Trade Center Site Memorial Competition was Israeli-American architect Michael Arad of Handel Architects, a New York and San Francisco-based firm. Arad worked with landscape architecture firm Peter Walker and Partners on the design which calls for a forest of trees with two square pools in the center, where the Twin Towers once stood.