The Bank of England holds 400,000 gold bars, worth £200 billion (€230 billion). This vault is extremely secure, and no one has been able to obtain these treasures. In fact, these gold bars have not been stolen in 320 years.
However, with the exception of February 16, 1836, the bank executives received anonymous letters. The authors of these letters instructed them to meet "inside the savings vault," where all the gold bullion was located, and to go at a time of their choosing. The astonished executives went to the location that night…
Upon arrival, they found nothing. There was no sound. However, the executives heard footsteps coming from underground. A few seconds later...a man appeared! He was a sewer worker who had accidentally discovered an old tunnel that led directly to the vault. The bank rewarded him with the equivalent of 100,000 euros!
That's a very small reward considering the value of the Bank of England.