A Long Island beach where people gathered and watched in horror as the distant World Trade Center towers collapsed on Sept. 11, 2001 is the site of the latest memorial to victims of the terror attacks and among a growing number that honor people who died of illnesses years after participating in the rescue and recovery effort.

The monument, built by the town of Hempstead near the Atlantic Ocean on Long Island's south shore, features a twisted, 30-foot-tall beam of Trade Center steel, an elevated walkway and granite plaques engraved with the names of the nearly 3,000 people who died in the attacks.