Photos of those slain in the terror attacks of Sept. 11, 2001, at the World Trade Center, the Pentagon and in Pennsylvania, a pillar memorializing the first responders killed in New York, and a warped piece of one of the Twin Towers are among the sights at the museum.
The museum's waterfall.
Faces of the fallen.
Pieces of steel from the lower portions of the Twin Towers, in their instantly recognizable design.
One of the bolts that keeps the slurry wall together.
The slurry wall, which held back the force of the Hudson River when the Twin Towers collapsed, preventing flooding that would only have worsened the horrors of Sept. 11, 2001.