Paris' party continued virtually until the eve of the outbreak of the First World War on 2 August 1914. Like other French cities, Paris initially welcomed the war as an opportunity to gain revenge for the defeat of 1870. Within a month, however, the city was full of refugees and the Germans were just 15 miles from the city. The government was evacuated to Bordeaux in the expectation that Paris would again fall to German forces.
The name of the city comes from the name of a Gallic tribe (parisis) inhabiting the region at the time of the Roman conquest. The historical heart of Paris is the Île de la Cité, a small island largely occupied by the huge Palais de Justice and the Cathedral of Notre Dame de Paris. It is connected with the smaller Ile Saint-Louis (another island) occupied by elegant houses built in the 17th and 18th centuries.
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.
The lines stayed mostly static for the next four years, with Paris experiencing the occasional bombardment from enemy aircraft and the giant "Big Bertha" long-distance artillery guns. The city's hedonistic life survived for a while before being subdued by the bloodshed on the front and the impact of rationing and a devastating flu epidemic in 1916. The war was finally ended by the Armistice of 11 November 1918, signed at Compiegne to the northeast of Paris.
As running battles were fought in the streets of Paris, Hitler ordered the city's commandant, von Choltitz, to destroy the capital. Von Choltitz, however, stalled. When General Leclerc's 2nd Armoured Division arrived on the outskirts of the city, von Choltitz ordered his forces to retreat, leaving the city open and largely intact with only stragglers from the garrison and dead-end resisters from the Vichy regime left to offer resistance. De Gaulle and Leclerc entered the city to a jubilant reception, establishing a temporary military government that lasted until 1946.
With the recapture of the city, the Valois monarchs and French nobility sought to impose their authority on the city through the construction of various grandiose ecclesiastical and secular monuments, including churches and mansions. Over the following century the city's population more than tripled. Francois I had probably the greatest impact of any Valois monarch, transforming the Louvre and establishing a glittering court including such notables as Leonardo da Vinci and Benvenuto Cellini.
In June 1944, Allied forces (including the Free French under General Charles de Gaulle) invaded Normandy. Two months later they broke through German lines and advanced rapidly across France. An uprising broke out in Paris on 19 August, led by the Resistance and the city's Police.
The city's escape from Attila proved a short-lived reprieve, as it was attacked and overrun in 464 by Childeric I (Childeric the Frank). His son Clovis I made the city his capital in 506 and was buried there on his death in 511, alongside St. Geneviéve.
Paris' history in the 14th century was thus punctuated by outbreaks of plague, political violence and popular uprisings. In January 1357, Étienne Marcel, the Provost of Paris, led a merchants' revolt in a bid to curb the power of the monarchy and obtain privileges for the city and the Estates General, which had met for the first time in Paris in 1347. After initial concessions by the Crown, the city was retaken by royalist forces in 1358 and Marcel and his followers were killed.
In 1900 Paris hosted the 1900 Summer Olympics. In late August 1944 after the battle of Normandy, Paris was liberated when the German general Dietrich von Choltitz surrendered after skirmishes to the French 2nd Armoured Division commanded by Philippe de Hauteclocque backed by the Allies.
Paris was, however, not spared from the religious violence affecting the rest of the country as Protestantism gained ground in defiance of an increasingly harsh Catholic backlash. Paris was a predominantly Catholic city - so much so that Ignatius Loyola founded the Society of Jesus there in 1534 - but also had a growing Protestant population. The rival religious factions pursued an increasingly bloodthirsty feud, with religiously-inspired assassinations and burnings at the stake.
Under de Gaulle's successors, Georges Pompidou and Valéry Giscard d'Estaing, Paris underwent major physical development. The radical Centre Pompidou was built along with the ultra-modern complex at La Villette (originally an abattoir, now a science museum).
The Merovingian kings died out in 751, to be replaced by the Carolingians. Pépin was proclaimed king of the Franks in 751, to be succeeded by Charlemagne, who moved the capital of his Holy Roman Empire from Paris to Aachen.