Under Roman rule, the town was thoroughly Romanised and grew considerably. It was, however, not the capital of its province, Lugdunensis Senona - that role was played by Agedincum (modern Sens, Yonne). It was Christianised in the 3rd century when St Denis became the city's first bishop. The process was not entirely peaceful - in about 250 St Denis and two companions were arrested and decapitated on the hill of Mons Mercurius, thereafter known as Mons Martis (Martyrs' Hill, now Montmartre).
At the same time, Paris acquired a less savoury reputation as the "sin capital of Europe", with hundreds of brothels, revues and risqué cabarets such as the famous Moulin Rouge. The city also acquired its metro system, opened in 1900.
A new wall was built around Paris in 1785, this time to create a customs barrier for taxation purposes. Not surprisingly, this was a very unpopular innovation. The disastrous harvest of 1788 brought matters to a head, with widespread hunger across France and food riots in Paris.
Napoleon's brief return from exile in 1815 saw him pass through Paris, en route to destiny at Waterloo on 18 June. His replacements, the restored Bourbon monarchs Louis XVIII (1814, 1815-1824) and Charles X (1824-1830), managed between them to provoke yet another revolution in Paris, confirming the saying that the Bourbons could "learn nothing and forget nothing."
The election of François Mitterrand in 1981 saw further major changes to the city's appearance and politics. The socialist Mitterrand frequently clashed with the powerful and abrasive Jacques Chirac, mayor of the city since 1977. Mitterrand undertook a number of grandiose grands projets to stamp his mark on the city.
In the aftermath of the revolt, Charles V of France took steps to guard against a recurrence; a new city wall was constructed to guard against exterior enemies while the grim fortress of the Bastille was built to control the city's restless population. Another revolt, this time over excessive taxation, broke out in 1382 under Charles VI of France but was quickly and violently suppressed. The city was subsequently punished by having its earlier privileges withdrawn.
Louis died in 1643, leaving the throne to his five-year-old heir Louis XIV. The new king and his family were forced to flee the city in 1648 by a rebellion, known as the Fronde, against royal authoritarianism and excessive taxes. Rebel rule proved considerably worse, however, and the king returned to a hero's welcome in 1653.
Fierce fighting broke out a few days later as government troops retook the city district by district. It only ended on 29 March, by which time an estimated 4,000-5,000 people on both sides had been killed. In the aftermath, another 10,000 Communards were shot, 40,000 were arrested and 5,000 were deported.
The history of Paris spans over 2,000 years, during which time the city grew from a small Celtic settlement to the multicultural capital of a modern European state.
The city was saved, however, by a desperate French effort to reinforce their lines and by a German failure to press home the attack. In the most famous incident of the "miracle on the Marne", as it became known, thousands of Parisian taxis were commandeered to carry soldiers to the front lines. The Germans were pushed back to the Oise some 75 miles away from the city.
Roman rule had ceased by 508, when Clovis the Frank made the city the capital of the Merovingian dynasty of the Franks. Viking invasions during the 800s forced the Parisians to build a fortress on the Ile de la Cité. On March 28, 845 Paris was sacked by Viking raiders, probably under Ragnar Lodbrok, who collected a huge ransom in exchange for leaving.
When Hitler invaded France on 14 May 1940 it took the German army only a month to reach Paris, invading through neutral Belgium around the Maginot Line, where the French defenses were massed. Paris fell with virtually no resistance on 14 June. Much of the city's population fled, with 1.6 million of its 3.5 million people leaving between May and June 1940.
Paris held out for four months, by which time starvation had taken hold and the population had been reduced to eating rats. The city finally surrendered on 28 January 1871 with punitive terms being inflicted on the defeated French. They were, in fact, unacceptably punitive in the eyes of many Parisians, who saw the peace treaty signed by the government of Adolphe Thiers as a betrayal.
Louis XIII became king at the age of only eight, with political power exercised by his mother Marie de Médicis in the role of regent. Although Louis took over when he reached the age of majority, at 15, the real power was exercised by the brilliant but ruthless Cardinal Richelieu, who greatly expanded royal power.