On this day of remembrance, there are countless tributes to loved ones lost scattered throughout the Pentagon memorial. The hallowed ground is for the world to see as it honors the sacrifice of the 184 who died here 11 years ago.
But inside the Pentagon, in an area cameras rarely go, there is another memorial. This one is created by those who experienced the worst loss from the terror attacks - the child of 9/11 victims.
This Pentagon exhibit is the first time the large scale artwork has been shown together, created by more than 500 children at America's camp, a summer camp held to support 9/11 families.
The art will be at the Pentagon until the end of the year. The originals belong to the 9/11 museum and the plan is to display them publically in the coming years.
It was through art, especially in the first few years after the attacks, that children - some very young - found a way to express the words they couldn't say about feelings they didn't understand.
Their messages are as powerful as they simple: I wish I could see my dad again.
For Pentagon curator Al Jones, the quilt slam is the most striking, made during the summers of 2002 and 2003. It's a combination of loss and sadness, tempered by hope and messages of love.
"We won't forget the price that was paid. That's really the connection," Jones says. "These people paid the ultimate price."