The Arc de Triomphe de l'Étoile is one of the most famous monuments in Paris. It stands in the centre of the Place Charles de Gaulle (originally named Place de l'Étoile), at the western end of the Champs-Élysées. It should not be confused with a smaller arch, the Arc de Triomphe du Carrousel, which stands west of the Louvre. The Arc de Triomphe honours those who fought and died for France in the French Revolutionary and the Napoleonic Wars, with the names of all French victories and generals inscribed on its inner and outer surfaces. Beneath its vault lies the Tomb of the Unknown Soldier from World War I.
The triumphal arch was commissioned in 1806 after the victory at Austerlitz by Emperor Napoleon at the peak of his fortunes. Laying the foundations alone took two years and, in 1810, when Napoleon entered Paris from the west with his bride Archduchess Marie-Louise of Austria, he had a wooden mock-up of the completed arch constructed. The architect, Jean Chalgrin, died in 1811 and the work was taken over by Jean-Nicolas Huyot. During the Bourbon Restoration, construction was halted and it would not be completed until the reign of King Louis-Philippe, between 1833 and 1836, by the architects Goust, then Huyot, under the direction of Héricart de Thury. On 15 December 1840, brought back to France from Saint Helena, Napoleon's remains passed under it on their way to the Emperor's final resting place at the Invalides. Prior to burial in the Panthéon, the body of Victor Hugo was exposed under the Arc during the night of 22 May 1885.
The monument stands 50 metres in height, 45m wide and 22m deep. Its design was inspired by the Roman Arch of Titus. The Arc de Triomphe is built on such a large scale that, three weeks after the Paris victory parade in 1919 (marking the end of hostilities in World War I), Charles Godefroy flew his Nieuport biplane through it, with the event captured on newsreel.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.