It is the perhaps the most unusual - and exclusive - museum in the world, filled with artefacts that have shaped history. But its doors are firmly shut to the public.
It is the only place a visitor can see the gun found with Osama bin Laden when he was killed, next to Saddam Hussein's leather jacket.
Welcome to the CIA's secret in-house museum.
Located inside the US intelligence agency's headquarters in Langley, Virginia, the collection has just been renovated to mark the agency's 75th anniversary. A small group of journalists, including the BBC, were given exclusive access, although with a security escort constantly at our side.
Among the 600 artefacts on display are the kinds of cold war spy gadgets you might expect - a 'dead drop rat' in which messages could be hidden, a covert camera inside a cigarette packet, a pigeon with its own spy-camera and even an exploding martini glass.
But there are also details on some of the CIA's more famous and even recent operations.
Read more (bbc.com/news/)