King Charles III is the current monarch of the United Kingdom and other Commonwealth realms. He became king in September 2022 after the passing of his mother, Queen Elizabeth II. Known for his dedication to environmental issues and charitable work, Charles has long been an advocate for sustainability and conservation. Before becoming king, he was known as Prince Charles and held the title for many years. He is the eldest son of Queen Elizabeth II and Prince Philip. Charles has a keen interest in architecture and the arts, and he has worked to promote various cultural initiatives throughout his life.