From the outside, Italy's Credem Bank looks just like any other high security operation.
And indeed, behind the barbed wire and electronic fence are piles of golden blocks. But they are not made of precious metal -- rather, they are ageing wheels of Parmesan cheese.
As I walk inside, I am hit by the pungent smell and then, by the size of the vaults.
Row after row, stacked up twenty shelves high, are 430,000 parmesan wheels. They're worth up to 190 million euros.