Ten Australians were among 2,977 people who died as a result of terrorism attacks in the United States on 11 September 2001. The National Museum of Australia has several collections that document the impact of 9/11, including personal stories of loss and commemoration.
An Australian flag found in the rubble of the World Trade Center has been loaned to the Australian Consulate-General in New York where it is on display as a gesture of respect to mark the 20th anniversary of the attack.
The Museum also holds material on the 'war on terror', when Australia joined the United States-led forces that invaded Afghanistan and Iraq, and the terrorism attacks in Bali in 2002.
Explore Defining Moments in Australian history