Fort Knox is situated in Kentucky, homes to the United States Bullion Depository. A fortified vault is inside it which stores the country’s gold reserves and treasures. The vault is surrounded by layers of fencing, razor wire, security cameras, armed guards, electrified fences and an entire army unit and at the end a 21 inches thick made from fire and drill- resistant materials. Though the whole place isn’t closed for people, just don’t think of asking about the vault.