When the hijacked planes hit the World Trade Center on September 11 in 2001, the final phone calls from passengers on board were messages of love. 20 years on, we remember them. 💔 | News.com.au

404K views · 8.5K reactions | Don’t miss 9/11: One Day in America. Available to catch up on demand now, this groundbreaking documentary series tells the definitive story of the tragic events of 11th September 2001 through the experiences of those who were there. Watch on Sky, NOW, Virgin, BT, TalkTalk and TV Player. | National Geographic UK | Facebook

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