WHATS REALLY INSIDE FORT KNOX During the Cold War, the U.S. military stockpiled opium and morphine sulfate in case of a medical supply shortage or nuclear exchange. The government spent millions refining the opium into morphine in 1993, and it's still stored at Fort Knox.  Historic artifacts Fort Knox also stores historic artifacts, including the Holy Crown of Hungary, which was brought to Fort Knox for safekeeping during World War II.  Is there Gold in Fort Knox?  Fort Knox is a top-secret United States Army post that's surrounded by mystery and conspiracy theories. The facility is not open to visitors, and even U.S. Presidents don't get an invite. The United States Bullion Depository at Fort Knox, Kentucky stores a large portion of the United States' gold reserves, as well as other precious items:  Gold Fort Knox holds about half of the Treasury's gold, which is roughly 147.3 million troy ounces (4,580 metric tons). The gold is kept in deep storage, which means it's in sealed vaults that are examined annually by the Treasury Department.  Other precious items Fort Knox also stores other valuables belonging to or in custody of the federal government.  Morphine sulfate