A steel beam from the World Trade Center stands at the center of Foundation Hall where the dedication ceremony took place at the National September 11 Memorial Museum on Thursday in New York. / John Munson AP
The National September 11 Memorial Museum is located at the site of the World Trade Center in Lower Manhattan.
Dedication: Thursday; opens to general public May 21 (sold out).
Operator: Non-profit foundation.
Admission: $24 adults; $18 seniors, veterans and college students; free for 9/11 family members and rescue/recovery workers who register; free to all 5 to 8 p.m. Tuesdays.
Exhibition space: 110,000 square feet.
Exhibits: The historical exhibit tells the story of the 9/11 attacks and related events. The memorial exhibition features photos of everyone killed in the attacks.
Cost: $700 million for the memorial (dedicated 9/11/11) and museum, from private donations and government grants.
Artifacts: Wrecked Fire Department Engine 21; structural steel from the upper floors of the World Trade Center's North Tower, which bore the brunt of the crash by a hijacked airliner; the leash of a police dog killed in the attack; a pair of high heels in which an office worker fled the South Tower; the helmet of a fire lieutenant who survived the collapse of the North Tower.
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