The Union flag was flown above Rothesay Pavilion on Tuesday to mark the birth of the Duke and Duchess of Cambridge’s first child.
Should current traditions be maintained in the future, the proud parents will eventually be known as the Duke and Duchess of Rothesay when they are in Scotland, while their son would also become Duke when his father accedes to the throne.
The title of Duke of Rothesay has been given to the heir apparent to the British throne since the Union of the Crowns in 1603, having previously been given to the heir apparent to the throne of the Kingdom of Scotland.
The practice was begun by King Robert III, who regularly resided at Rothesay Castle, and first granted the title to his son David in 1398.
The Duke of Rothesay also holds a number of other Scottish titles, including those of Earl of Carrick, Baron of Renfrew, Lord of the Isles and Prince and Great Steward of Scotland.