This week marks two-and-a-half decades since al Qaeda attacked the United States, profoundly reorienting the nation’s concept of security and laying claim to the collective imagination of the years that followed: the “post-9/11 era.” The world we know today – including, in the United States, many of our laws and the bureaucratic design of government institutions, along with their successes, excesses, and pathologies – was forged and defined by that event.  

So much more at After September 11.…

Remembrance and Service

A quarter century after the September 11, 2001 attacks, 100 million Americans are too young to remember the day that changed our city and nation forever. It is our shared promise — made 25 years ago — to never forget so those born after 9/11 learn its significance and enduring legacy. As we commemorate this anniversary, a new generation will learn about the unimaginable loss we experienced and the inspiring stories of bravery, compassion, unity, and service that we witnessed, and have rippled through the decades.

Always new information and so much more to learn at September 11

Visit the Museum

The Museum is currently open Wednesday through Monday and many Tuesdays from 9 a.m. to 7 p.m. Visitors are invited to explore at their own pace, but should plan on spending 45-90 minutes here. Get tickets

On September 11, 2001, 19 terrorists from the Islamic extremist group al Qaeda—founded by Osama bin Laden—hijacked four commercial passenger airplanes and carried out coordinated suicide attacks against targets in the United States.