The National Iron & Steel Heritage Museum commemorates of the 23rd anniversary of the 2001 attack.

The National Iron & Steel Heritage Museum is home to the largest collection of World Trade Center steel outside of New York City.

NISHM is home to ten "Tridents or Trees" left standing after the collapse of the North Tower. The steel for the first nine stories of both the North and South towers was melted, rolled and cut into the distinctive trident shapes at Lukens Steel in Coatesville, PA.