16th Anniversary: 20 Pictures We'll Never Forget

Posted September 12, 2017

The National September 11 Memorial & Museum in New York City will hold a memorial ceremony Monday morning celebrating the lives of those lost on that day, and the lives lost in the bombing of the Twin Towers on February 23, 1993.

Almost 3,000 people were killed in 2001 when hijackers flew commercial airplanes into New York's World Trade Center, the Pentagon and a field near Shanksville, Pennsylvania.

Today marks the sixteenth anniversary of the 9/11 terrorist attacks.

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Almost 3,000 people were killed on September 11, 2011 when two hijacked passenger jets slammed into each of the Twin Towers, or the World Trade Center.

Hundreds gathered in Shanksville, Pennsylvania, for a ceremony honoring the 40 passengers and crew members who died there.

They also rang out to mark other significant timings during that destructive day in 2001, including the moment the south tower collapsed in NY.

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24 Canadians were among the almost three thousand people killed. Another jet crashed into the Pentagon in Washington, D.C.

It preserved their heart and heroism - but also the "hateful" voices of terrorists who were intent on bringing death and destruction that day, said Patrick White, Friends of Flight 93 National Memorial president. At 9:03 a.m. a plane crashed into the second tower of the World Trade Center.

Following are some of the tributes posted on social media by people, including celebrities and politicians, using the hashtag "Never Forget" and "September 11". She is making a documentary about the children who lost parents in the attacks.

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According to the proposed map on the organization's website, the looped trail will travel south from the World Trade Center into New Jersey and follow a large portion of the Delaware & Raritan Canal before crossing into Morrisville on the Calhoun Street Bridge.