The new rulers organised themselves into a five-man Directoire but had only a shaky grip on power. In 1795 they were saved from a royalist revolt by a young army officer named Napoleon Bonaparte, who dispersed a hostile Parisian mob by the simple expedient of firing into it with cannons at point-blank range.
Napoleon's rule came to an abrupt end when he declared war on Prussia in 1870, only to be defeated and captured at Sedan. He abdicated on 4 September, with a Third Republic proclaimed that same day in Paris. On 19 September the Prussian army arrived at Paris and besieged the city. Major city landmarks were pressed into military service, with the Louvre being turned into an arms factory, the Gare d'Orleans (now the Gare d'Austerlitz) into a balloon workshop and the Gare de Lyon into a cannon foundry.
As early as the 12th century, the distinctive character of the city's districts was emerging. The Ile de la Cité, on which the Cathedral of Notre Dame de Paris was built in 1163, was the centre of government and religious life; the Left Bank was the centre of learning, focusing on the various Church-run schools established there; and the Right Bank was the centre of commerce and finance. A league of merchants, the so-called Hanse Parisienne, was established and quickly became a powerful force in the city's affairs.
Paris is densely covered by a metro system, the Métro, as well as by a large number of bus lines. This interconnects with a high-speed regional network, the RER, and also the train network: commuter lines, national train lines, and the TGV (or derivatives like Thalys or Eurostar for specific destinations). There are two tangential tramway lines in the suburbs: Line T1 runs from Saint-Denis to Noisy-le-Sec, line T2 runs from La Défense to Issy. A third line along the southern orbital road is currently under construction.
Paris is served by two principal airports: Orly Airport, which is south of Paris, and the Charles De Gaulle International Airport in nearby Roissy-en-France. A third and much smaller airport, at the town of Beauvais, 70km (45 miles) to the north of the city, is used by charter and low-cost airlines. Le Bourget airport nowadays only hosts business jets, air trade shows and the aerospace museum.
Henri III had nominated Henri of Navarre, a Protestant, as his heir. The new king, Henri IV, converted to Catholicism in 1594 with the declaration that "Paris is well worth a mass," thus convincing the Parisians to accept him as their king. He undertook a number of major public works in the city but faced constant danger from religious fanatics on both sides, particularly after granting religious tolerance to Protestants under the Edict of Nantes. After surviving at least 23 assassination attempts, he fell victim to a Catholic fanatic on 14 May 1610.
The arrival in Paris of the Industrial Revolution prompted the city's breakneck growth, with migrant workers arriving from the countryside on newly-constructed railway lines. By now its population was over 900,000 people, making it one of the largest cities in Europe and far surpassing any other city in France (the next largest, Lyon and Marseille, had only about 115,000 each).