The Arc de Triomphe, as its name implies, is a triumphant gate for the army to go out for battle. It is the world's largest circular arch, located in the center of Charles de Gaulle Square in central Paris on the island. The square was also built in conjunction with the Arc de Triomphe of the Lion, because the completion of the Arc de Triomphe brought inconvenience to traffic. In the mid-19th century, a circular square and 12 roads were built around the Arc de Triomphe, each of which was 40.80 meters wide and radial, just like the brilliant light of a star, so the square was also called the Star Square. The Arc de Triomphe is also known as the "Stargate". The Arc de Triomphe lies at the end of the famous Champs Elysees.