The legacy of Guantanamo Bay prison 10 years after 9/11
5 September 2011 Last updated at 23:30 BST
Just four months after the September 11 terror attacks, the US military began sending prisoners caught on the battlefield in Afghanistan, to Guantanamo Bay in Cuba.
A decade later, there are still nearly 200 prisoners there, including some of those connected to the attacks.
Mark Mardell visited the prison, and looks back on the legacy of Guantanamo.