NEW YORK CITY - Eleven years after the September 11 attacks, the new World Trade Center towers are climbing the sky.
Reconstruction of the 16-acre site began in November 2002. The tallest tower, known at One World Trade Center, has 90 floors and three-million feet. It is also the tallest building in New York City.
Nearly half of the building is leased. It will be home to the General Services Administration, a federal agency, and the Vantone China Center, a liaison between the U.S. and Chinese businesses.
The site is scheduled for completion in 2014.
Families gathered at the memorial site at Ground Zero on Tuesday. Families and friends read the 2,753 names of the loved ones they lost.
Politicians came to the ceremony, but were not invited to speak because the memorial president wanted the focus to be on the families.
In Shanksville, Pennsylvania, Vice President Joe Biden spoke at a ceremony to honor the 40 passengers and crew members from Flight 93. The flight was traveling from Newark, New Jersey to San Francisco when it was hijacked by terrorists.
Washington, DC also honored the day with President Barack Obama and First Lady Michelle Obama giving a moment of silence on the White House lawn and at then again at the Pentagon, where 184 people lost their lives when terrorists flew a plane into the building.