Clarence House: Hello Washington DC! The Prince of Wales and The Duchess of Cornwall begin a four-day official visit to the USA tomorrow. Pictured here is the Thomas Jefferson Memorial, from accross the Tidal Basin. #RoyalVisitUSA

Hello Washington DC! The Prince of Wales and The Duchess of Cornwall begin a four-day official visit to the USA tomorrow. Pictured here is the Thomas Jefferson Memorial, from accross the Tidal Basin. #RoyalVisitUSA

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