Most of us remember where we were on 9/11. We watched the events in New York, Pennsylvania, and Washington D.C. unfold from our windows, our televisions and on the ground. The artifacts and installations featured in the 9/11 Memorial Museum tell the story of what happened on 9/11, what led up to it and its aftermath. | National September 11 Memorial & Museum

Descending from the 9/11 Memorial into the 9/11 Memorial Museum, visitors encounter 110,000 sq. ft. of museum space and historic artifacts set within the remnants of the Twin Towers. www.911memorial.org | National September 11 Memorial & Museum

A moment of silence was held to mark the first moment a plane struck one of the World Trade Center's Twin Towers 24 years ago as New York City and the nation remembers 9/11 on Thursday. Nearly 3,000 people were killed in terrorist attacks in New York, the Pentagon and a plane that crashed in Shanksville, Pennsylvania. https://cbsn.ws/4pgABSq | CBS News