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 city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.