18 to19th century
1789, the French Revolution broke out. As one of the revolutionary measures, many place names in Paris have been changed: Louis XV Square was renamed Concorde Square, Notre Dame de Paris was renamed "Hall of Reason", the outstanding Gothic building Saint Jacques Church was razed to the ground, and the bronze statues of Paris kings such as Louis XIV of Fendom Square and Henry IV of Xinqiao were overthrown. After the Great Revolution, Napoleon carried out new expansion work in Paris, built the Arc de Triomphe in Paris and the north and south wings of the Louvre, renovated the banks of the Seine River, dredged the river, and built a large number of classical palaces, buildings and apartments.
Since then, Paris has experienced anti-French alliance occupation, 1830 July Revolution and 1848 Revolution. By the time of Charles Louis Napolé on Bonaparte, the city was in ruins, and the street features and ancient narrow city lines evolved from the Middle Ages no longer met the expectations and demands of the west for a national capital in the19th century.
1859, Charles Louis Napolé on Bonaparte appointed Balon Georges Eugène Haussmann, the governor of the Seine and the police chief of Paris, to be responsible for the large-scale urban transformation of Paris. Osman demolished the outer walls of Paris, built circular roads, opened up many straight boulevards in the old city, built many neoclassical squares, parks, residential areas, hospitals, railway stations, libraries, schools, public fountains and street sculptures, and also built urban water supply and drainage systems by using the old stone mines criss-crossing underground in Paris. However, he also demolished many precious historical heritages and cultural relics, and the destruction of the old city of Paris has always been controversial. Baron Haussmann demolished all the slums in the center of Paris, provided no temporary shelter, and drove all the poor out of the city. In addition, in order to avoid the resurgence of the revolution, many canals are underground, so that the military watchtower has no dead ends, so that the rebels can't hide on the riverbank and shoot at government troops.
1870 Franco-Prussian War and 187 1 Paris Commune, Paris was destroyed by the war again. Faced with failure, the Paris Commune set fire to several major buildings in Paris on May 24th, 187 1. Since then, Paris has experienced a second period of large-scale development. As the centenary of the French Revolution and to welcome the Paris World Expo, the Eiffel Tower was built in 1889. In order to welcome the 1900 World Expo, the Paris Metro, the Grand Palace and the Small Palace were built.