When something is heavily protected, we often say it’s “guarded like Fort Knox.” As with most cliches, this saying is based in truth; The United States Bullion Depository, known simply as Fort Knox, is a fortified vault building adjacent to the Fort Knox Army Post just outside of Louisville, Kentucky. The United States Bullion Depository at Fort Knox is not a production facility — it stores precious metal bullion reserves for the United States and is a heavily guarded vault in Kentucky.

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While you can’t visit this heavily guarded vault in Kentucky, it’s pretty darn cool that the Bluegrass State lays claim to such a legendary American icon!

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