History: Collapse Of The World Trade Center, September 11, 2001, Lower Manhattan, New York City, United States

Rebuilding
After years of delay and controversy, reconstruction at the World Trade Center site is now well underway. The new complex will include One World Trade Center (formerly known as the Freedom Tower), 7 World Trade Center, three other high-rise office buildings, a museum and memorial, and a transportation hub similar in size to Grand Central Terminal. Both One and Four World Trade Center are on track for completion and occupancy by 2013. The 9/11 memorial is complete, with the museum set to open in 2012. Two and Three World Trade Center, as well as the Transportation Hub, are also making progress, set to be finished by around 2015.
• History
The process of cleanup and recovery continued 24 hours a day over a period of eight months. Debris was transported from the World Trade Center site to Fresh Kills on Staten Island, where it was further sifted. On May 30, 2002, a ceremony was held to officially mark the end of the cleanup efforts. In 2002, ground was broken on construction of a new 7WTC building located just to the north of the main World Trade Center site. Since it was not part of the site master plan, Larry Silverstein was able to proceed without delay on the rebuilding of 7 World Trade Center, which was completed and officially opened in May 2006; this had been considered a priority since restoring the Consolidated Edison Cos. electrical substation in the building's lower floors was necessary to meet power demands of Lower Manhattan. While 7 World Trade Center was not part of the master plan for the Twin Towers site, Silverstein and Con Edison recognized that the rebuilding of 7 World Trade Center would have to be consistent with the master plan which was expected to re-open the street grid which had been blocked by the original World Trade Center super-block. As a result, the design for the new 7 World Trade Center allowed for the re-opening of Greenwich Street, which had been blocked by the original 7 World Trade Center. A temporary PATH station at the World Trade Center opened in November 2003; it will be replaced by a permanent station designed by Santiago Calatrava.