Complex sentence: The shrine was destroyed on 14 September 1538 under the orders of Henry VIII. The well now survives, now dry and surrounded by a protective wall, topped with a domed iron grill.
Split into simpler sentences: The shrine was destroyed on 14 September 1538 under the orders of Henry VIII. Only the well now survives. It is now dry and surrounded by a protective wall, topped with a domed iron grill.