World Trade Center (2001-present)

World Trade Center
View of 1 and 7 WTC in 2015
General information
Status	Under construction
Location	New York City
Coordinates	40°42′42″N 74°00′45″W / 40.71167°N 74.01250°W / 40.71167; -74.01250Coordinates: 40°42′42″N 74°00′45″W / 40.71167°N 74.01250°W / 40.71167; -74.01250
Groundbreaking	2002
Construction started	1 WTC: April 27, 2006 2 WTC: June 1, 2010 3 WTC: 2010 4 WTC: January 2008 7 WTC: May 7, 2002
Completed	1 WTC: July 2014 4 WTC: November 13, 2013 7 WTC: May 23, 2006
Opening	1 WTC: November 3, 2014 2 WTC: 2021 (est.) 3 WTC: 2018 (est.) 4 WTC: November 12, 2013 Transportation Hub: March 3, 2016
Owner	Port Authority of New York and New Jersey
Other information Height Antenna spire One WTC: 1,776 feet (541 m) Roof 1 WTC: 1,368 ft (417.0 m) 4 WTC: 978 ft (298 m) 7 WTC: 741 ft (226 m) Top floor 1 WTC: 1,268 ft (386.5 m) 7 WTC: 679 ft (207 m) Technical details Floor count 1 WTC: 104 floors 4 WTC: 78 floors 7 WTC: 52 floors Floor area 1 WTC: 3,501,274 sq ft (325,279 m2) 4 WTC: 2,500,000 sq ft (232,258 m2) 7 WTC: 1,681,118 sq ft (156,181 m2) Lifts/elevators One WTC: 71 4 WTC: 55 7 WTC: 29 Design and construction Engineer Worthington, Skilling, Helle & Jackson,Leslie E. Robertson Associates Main contractor Tishman Realty & Construction Company

Port Authority of New York and New Jersey

The World Trade Center is a partially completed complex of buildings under construction in Lower Manhattan, New York City, U.S., replacing an original complex of seven buildings with the same name on the same site that were damaged or destroyed in the September 11 attacks. The site is being rebuilt with five new skyscrapers, a memorial and museum to those killed in the attacks, and a transportation hub. One World Trade Center, the tallest building in the United States, North America and the Western Hemisphere is the lead building for the new complex, reaching more than 100 stories upon its completion in November 2014.

The original World Trade Center featured the landmark Twin Towers, which opened in 1973, and were the tallest buildings in the world at their completion. They were destroyed on the morning of September 11, 2001, when al-Qaeda-affiliated hijackers flew two Boeing 767 jets into the complex in a coordinated act of terrorism. The attacks on the World Trade Center killed 2,753 people. The resulting collapse caused structural failure in many of the surrounding buildings as well. The process of cleaning up and recovery at the World Trade Center site took eight months, after which rebuilding of the site commenced.