The National September 11 Memorial & Museum serves as the primary tribute ... as eerie footprints where the World Trade Center's twin towers once stood. The 1-acre pools are enclosed in bronze ...

Two blue beams, consisting of 88 high-powered xenon lightbulbs and positioned to echo the Twin Towers, will rise 4 ... 11, according to the 9/11 Memorial & Museum. The Tribute in Light can be ...