6. Lancaster House
Other scenes with Queen Charlotte are filmed in Lancaster House in London, which is used extensively as Buckingham Palace in The Crown as well as in The Young Victoria, The King’s Speech, and an episode of Downton Abbey.
Lancaster House was originally built for the Duke of York and Albany, a son of of King George III. It was later owned by the Duke of Stafford and lastly by Sir William Lever, 1st Baronet, a soap maker from Lancashire, who renamed the house in honor of his home county. He donated the house to the the United Kingdom just a year after purchasing it, and it has been used as the London Museum, is home to the Government Wine Cellar, and is used for important government events. The G7 summit was held there twice.