National September 11 Memorial &amp; Museum

The National September 11 Memorial &amp; Museum (also known as the 9/11 Memorial &amp; Museum) is a memorial and museum in New York City honoring the victims of the September 11, 2001 attacks, which killed 2,977 people, and the 1993 World Trade Center bombing, which killed six. 
Background.
The memorial is located at the World Trade Center site, the former location of the Twin Towers that were destroyed during the September 11 attacks. 
A memorial was planned shortly after the attacks for the victims and those involved in rescue and recovery operations. The winner of the World Trade Center Site Memorial Competition was Israeli-American architect Michael Arad. The memorial has swamp white oak trees with two square reflecting pools in the center marking where the Twin Towers stood.
The reflecting pool of the memorial has the names of the victims who died during the 1993 World Trade Center bombing, United Airlines Flight 93, American Airlines Flight 11, American Airlines Flight 77, United Airlines Flight 175, collision of The Pentagon and the collapse of the World Trade Centers.
Tickets to the museum are $24, a price which has raised concerns and has been controversial.
The dead bodies of over 1,000 victims who could not be identified have been placed 70ft below the memorial in 2014.