In her understated way, Queen Elizabeth spoke of how she never aspired to become Britain’s longest-reigning monarch – an achievement that is rooted in the solemn fact that she became a young queen at the premature death of her father, King George VI. But while Elizabeth was just 25 years old when she unexpectedly ascended, her heir and firstborn son, Prince Charles, is still waiting for his crowning moment at age 66. Charles was not with his 89-year-old mother on her milestone day, and instead spent it quietly working behind closed doors on a special project at Dumfries House, the home he helped save in southern Scotland.