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 new 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. The final cost was reported at about 10,000,000 francs (equivalent to an estimated €65 million or $75 million in 2020). 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 Les Invalides. Before burial in the Panthéon, the body of Victor Hugo was displayed under the Arc on the night of 22 May 1885. 20th century The sword carried by the Republic in the Marseillaise relief broke off on the day, it is said, that the Battle of Verdun began in 1916. The relief was immediately hidden by tarpaulins to conceal the accident and avoid any undesired ominous interpretations. On 7 August 1919, Charles Godefroy successfully flew his biplane under the Arc. Jean Navarre was the pilot who was tasked to make the flight, but he died on 10 July 1919 when he crashed near Villacoublay while training for the flight. Following its construction, the Arc de Triomphe became the rallying point of French troops parading after successful military campaigns and for the annual Bastille Day military parade. Famous victory marches around or under the Arc have included the Germans in 1871, the French in 1919, the Germans in 1940, and the French and Allies in 1944 and 1945. A United States postage stamp of 1945 shows the Arc de Triomphe in the background as victorious American troops march down the Champs-Élysées and U.S. airplanes fly overhead on 29 August 1944. After the interment of the Unknown Soldier, however, all military parades (including the aforementioned post-1919) have avoided marching through the actual arch. The route taken is up to the arch and then around its side, out of respect for the tomb and its symbolism. Both Hitler in 1940 and de Gaulle in