| The Grand Duke's official birthday, which is also known as National Day of Luxembourg, is celebrated as the annual national holiday of Luxembourg. On June 23, an official ceremony was held at the Luxembourg Philharmonie as part of the National Day celebrations. Grand Duke Henri, Grand Duchess Maria Teresa, Hereditary Grand Duke Guillaume, Hereditary Grand Duchess Stephanie, Prince Felix, Princess Alexandra, Prince Sebastian and Prince Louis attended the ceremony at Philharmonie. |
