Tower of London, Raven. Eight ravens are kept at the Tower of London. Their wings are clipped so they can't fly away. Legend has it that failing to have Ravens reside at the Tower will cause it to crumble and a terrible disaster shall befall England.
A raven and guard at the Tower of London. According to superstition, there must always be 6 ravens present at the Tower, or else the monarchy, kingdom, and Tower itself will fall. In "The Tudors," when Anne was executed, you can see her look up at the flying ravens overhead. In actuality, they all stopped flight and sat on the edge of the Tower as she lost her head...something eyewitness accounts of the execution described as not only eerie, but highly unusual.