Published On: Aug 23 2011 04:09:26 AM CDTUpdated On: Nov 30 2014 01:26:35 PM CST
One World Trade Center is officially open for business. Take a look at New York's World Trade Center site before and after the Sept. 11 attacks.
The World Trade Center during final phase of construction in 1971.
FBI investigators pore over the debris following the Feb. 26, 1993, terrorist bombing at the World Trade Center in New York City that killed six people and injured more than a thousand others.
The view of the New York skyline with the World Trade Center at sunset on Sept. 5, 2001, taken from the US Open at the UATA National Tennis Center in Flushing, New York, a few days before the Sept. 11 terrorist attacks.
The south tower of the World Trade Center is wracked by explosions just after hijacked United Airlines Flight 175 from Boston crashed into it Sept. 11, 2001, in New York City.
The remaining tower of New York's World Trade Center dissolves in a cloud of dust and debris about a half hour after the first twin tower collapsed, Sept. 11, 2001.
Police escort a civilian from the scene of the collapse of a tower of the World Trade Center Sept. 11, 2001, in New York City after two airplanes slammed into the twin towers in an alleged terrorist attack.
Rescue workers clear debris from the remains of the destroyed World Trade Center towers Sept. 12, 2001, in New York City.
Heavy equipment is used to lift rubble from the ruins of the World Trade Center in New York, Oct. 17, 2001.
Cleanup and recovery work continues at ground zero site in New York on March 6, 2002.
A wreath, a picture and scrawled messages in honor of those who perished are part of a memorial to the victims of the Sept. 11, 2001, terror attack at a viewing platform Jan. 26, 2002, at Ground Zero in New York City.
A view of one of the six planning options presented by the Port Authority of New York and New Jersey and the Lower Manhattan Development Corp. for the 8-acre Memorial Plaza, with a freestanding tower (L), located within the 16-acres World trade Center site is shown July 16, 2002, in New York City.
The cornerstone for the Freedom Tower, the 1,776-foot-tall building that will be built on the site, sits in place after a being unveiled during a ceremony at the base of the ground zero site of the former World Trade center in New York, July 4, 2004. The cornerstone is inscribed "To honor and remember those who lost their lives on Sept. 11, 2001, and as a tribute to the enduring spirit of freedom, July 4, 2004."
Architect of the World Trade Center memorial Michael Arad (L) chats with Bovis' James Abadie at the site where the World Trade Centers once stood, Aug. 17, 2006, in New York City. The World Trade Center Memorial Foundation and the Port Authority began construction of the footings for the memorial and museum.
World Trade Center site developer Larry Silverstein looks up at at 7 World Trade Center April 25, 2006, after a news conference in New York City. Silverstein said he would agree, with conditions, to the government's offer and let it take over building the Freedom Tower and another skyscraper at ground zero.
General view of the site of the Freedom Tower at ground zero and Lower Manhattan in New York, July 19, 2006.
A Port Authority police officer looks on as families of 9/11 victims visit a reflecting pool at the World Trade Center site Sept. 11, 2007, in New York City.
A general view of the World Trade Center construction site in New York, Sept. 8, 2009.
Visitors view a model of the World Trade Center site on the opening day of the 9/11 Memorial Preview Site near the World Trade Center Aug.26, 2009, in New York City. The site provides the public with an opportunity to learn about the Sept. 11, 2001, terrorist attacks and the National September 11 Memorial and Museum.
Construction workers continue building the walls of one of the memorial waterfalls at the World Trade Center site in New York, Oct. 26, 2010.
Construction work continues at the World Trade Center site in New York, Jan. 6, 2011.
Construction continues on One World Trade Center tower (R) at the World Trade Center site, March 9, 2011. When completed, One World Trade Center will reach 104 stories.
The memorial for victims of the 9-11 attacks at the site of the World Trade Center nears completion in New York on Aug. 25, 2011. The two depressions mark the location of the original towers and will be reflecting pools.
New York City police officer Danny Shea, a military vet, salutes at the North pool of the 9/11 Memorial during the 10th anniversary ceremonies of the Sept. 11, 2001, terrorist attacks at the World Trade Center site, Sept. 11, 2011, in New York City. The attacks resulted in the deaths of 2,753 people after two hijacked planes crashed into the World Trade Center.
A worker cleans the south pool waterfall as construction continues on the National September 11 Memorial & Museum at the World Trade Center site on Aug. 24, 2011, in New York City.
Motorcyclists look at One World Trade Center Sept. 11, 2010, upon arriving at Ground Zero of the Sept. 11, 2001, terrorist attacks in New York.
Iron workers lifted the final piece of the spire to the top of the One World Trade Center in New York May 10, 2013. The piece raised the building to its full height of 1,776 feet and helped fill a void in the skyline left by the Sept. 11 attacks.
One World Trade Center officially opened for business on Nov. 3, 2014. Publisher Conde Nast was the first tenant, with 3,400 staffers filling 24 stories of the building.
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