The Coronation Throne in Westminster Abbey, London

This is the throne that our present Queen Elizabeth was crowned on in 1953. It was made for Edward I, Longshanks, to hold the Stone of Destiny which he had looted from the Scots. Prior to its theft, this stone was used during the coronation of all Scottish kings because it was regarded as a very holy relic. It was thought to be Joseph's pillow described in the Old Testament, when Joseph had the dream of wrestling with an angel.
My cousin, an avid Scottish Nationalist, tried to steal it back for Scotland, some years ago. He took a trolley to wheel this very heavy lump of rock out of Westminster Abbey. As soon as he touched the stone, alarms sounded. He continued setting up his equipment for removing the stone from its slot under the throne. The minutes passed. Nobody came to see what the alarm was about. But just as he had it lifted out the ropes on his pulley slipped, the stone plummeted onto the trolley causing its axles to break. He couldn't move it. So he waited patiently for the police to arrive, and went quietly. Because they recognised that he wasn't really a criminal and only wanted to make a political statement, the authorities fined him rather than sentencing him to a term of prison.