Whitehall Palace - to replace the earlier complex of the same name - was the dream of Inigo Jones, the first English architect to design in the Classical style.

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At around the same time a brief document made the short journey from Whitehall down the Mall to Buckingham Palace.

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They will be married by the Archbishop of Canterbury before returning to Buckingham Palace in a glass carriage along Parliament Square, Whitehall, Horse Guards Parade and The Mall.

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