Balmoral Castle holds a "uniquely special place" in the hearts of the royal family, the King has said in the foreword to a new guidebook.
Charles said the vast Scottish estate is a "cherished home" for his family, with "startling individuality" and a "precious, almost sacred, surrounding landscape".
In 1852, the Balmoral estate was purchased by Queen Victoria and her husband Prince Albert, who had fallen in love with the highlands and went on to build the castle.
