Fort Knox

1929, when the economy in USA crashed, everyone wanted to change dollars for gold. But there were more dollar bills in circulation than there were gold so Franklin Roosevelt made a law in 1933 that no private person could own gold anymore. All the gold that was changed in for dollars needed a home, and Fort Knox was built. Below the fortress-like structure lies the gold vault, which is lined with granite walls and which is protected by a blast-proof door that weighs 22 tons. No single person is entrusted with the entire combination to the vault. Gold holdings peaked during World War II at 20,205 tons that would be worth approximately $765 billion. Current holdings are around 5,050 tons in around 368,000 standard 12.4 kg gold bars.