Did you know....
The National September 11 Memorial & Museum at the World Trade Center Foundation, Inc. began formal operations in the spring of 2005 and worked with the Lower Manhattan Development Corporation on the design and construction management plan. In the summer of 2006, the organization assumed responsibility for overseeing the design and working with The Port Authority of New York and New Jersey (PANYNJ), the construction manager on the project.
http://www.911memorial.org/Enjoy this brief time lapse video of the construction of the National September 11 Memorial & Museum. It's a fitting tribute to the 2,983 men, women and children who were taken from us too soon on that horrible day.