More than 4,603 tons (4,176 metric tonnes) of gold bullion sits in vaults at Fort Knox, Kentucky.
That’s about $6 billion worth of gold bullion.
It is all owned by the federal government. Fort Knox is also known as the United States Bullion Depository.
The gold is stored as bars that are a little smaller than building bricks.
Each bar contains about 400 troy ounces (12,441 g) of gold and weighs about 27.5 pounds (12.5 kg).
The vault is so secure that during World War II the federal government sent their original copies of the U.S. Constitution and the Declaration of Independence to Fort Knox for safekeeping.