The Arc de Triomphe in Paris is a representative building of the imperial style. The rise of this style has an inseparable relationship with Napoleon's advocacy. Its prosperity and decline have always been closely linked to Napoleon's fate. These buildings are inspired and modeled by the magnificent and solemn buildings of the Roman Empire. They are large in scale, simple in appearance, and pursue the majesty, calmness and dignity of the image. The Arc de Triomphe in Paris is exemplified by the Arc de Triomphe in ancient Rome, but its scale is larger and its structure style is more concise. Apart from the eaves, walls and wall foundations, the whole building does not make any big divisions, does not use pillars, even buttress pillars are removed, and there is no line foot. The Arc de Triomphe abandoned the multi-arch coupon model of the Roman Arc de Triomphe, and set up only one arch coupon, which is simple and solemn. In November 1920, after the First World War, under the magnificent Arc de Triomphe, another "Tomb of the Unknown Martyr" was built, which buried an unknown soldier who died in the war. He represented the 1.5 million French officers and soldiers killed in the whole war. Almost every day, people come here to lay flowers in memory of the dead soldiers, which adds a solemn and heroic feeling to the Arc de Triomphe.