The Queen has some surprising possessions. Among them are Westminster Abbey and the Chapels Royal. These are “peculiars of the crown” — as are the Channel Islands, where they still call Her Majesty the Duke of Normandy to remind outsiders that they were with William the Conqueror on the winning side at the Battle of Hastings. The queen also owns the Tower of London — part of a collection of Historic Royal Palaces. Not forgetting the Royal Collection — to which she has added nearly 150 portraits over the past six decades — follow the process used to create one of the most unusual.