September 11: A Day of Remembrance and Service

Shadow on a memorial wall lined with flowers
Wall of Names at Flight 93 National Memorial

NPS / B. Torrey

The nation changed forever on September 11, 2001. Many Americans remember a country before and a country after, and for many young Americans, only a country after. Terrorist attacks causing tragic loss of life at the World Trade Center in New York City, the Pentagon in sight of the nation’s capital, and a quiet field in southern Pennsylvania led to conversations and reflection on American identity, patriotism, security, and service that resonate today.

Join us for a day of remembrance by visiting a national park or following the September 11 Observation at Flight 93 National Memorial. Or participate in the national 9/11 Day of Service by volunteering at national parks throughout the country.

A National Day of Remembrance

For months following September 11, 2001, people came together to grieve family, friends, and strangers. More than 20 years later, we still do. Sometimes called “Patriots Day” or “Day of Remembrance”, September 11 has become an annual day for many Americans to remember, reflect, honor, and mourn.

Memorials were created in communities around the country and at the three main sites of the attack. Flight 93 National Memorial in Shanksville, Pennsylvania, is part of the National Park System as a memorial to 40 passengers and crew who thwarted an additional attack preventing the loss of more lives. Consider visiting a national park for remembrance.

Military service members folding a flag near a wreath and memorial wall
September 11 Observance at Flight 93

Find information about or to follow the annual observance at Flight 93 National Memorial in Pennsylvania.

Tall metal tower in a field of yellow flowers
Flight 93 National Memorial

Learn more about the memorial and ongoing projects to be a place of remembrance and healing.

Torch of the Statue of Liberty
September 11th Oral History Project

Historians recorded the memories and perspectives of National Park Service staff who experienced the events and their aftermath.

Group of volunteers planting seedlings in a large field

NPS Photo

9/11 Day of Service

Two decades ago, on September 11, 2001, many lost their lives to the "9/11" attacks. In the days and months after, many people around the country and world rallied to service in various ways. To honor the spirit of sacrifice made that day and the sacrifices that continue to be made by community members, first responders, and members of the armed forces and their families, we unite in a national day of service happening communities and public lands across the country. 

Unite in service by volunteering in honor 9/11 Day of Service:

News and Stories

Find National Park Service news releases and stories related to September 11, including history projects, memorial updates, service projects, and more.
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    Last updated: September 8, 2022