During the 11th century the city spread to the Right Bank. In the 12th and 13th centuries, which included the reign of Philip II Augustus (1180-1223), the city grew strongly. Main thoroughfares were paved, the first Louvre was built as a fortress, and several churches, including the Cathedral of Notre-Dame, were constructed or begun.
In 885 the city was faced with a massive Viking invasion force, said to have numbered 700 ships and 30,000 men. Its inhabitants sought the assistance of Robert the Strong, Count of Anjou, and his son Odo, Count of Paris. Odo led the defence of the city in opposition to a ten-month Viking siege in 885 and became co-ruler of the Empire with Charles the Simple. His son Hugh Capet was elected King of France (or Francia - literally the land of the Franks) in 987. He made Paris his capital and founded a long-lasting dynasty, the Capetians.
Civil war broke out in France after the assassination of Louis of Valois, Duke of Orléans by the Burgundian John the Fearless. In the ensuing chaos, the English captured Paris in 1420. In 1422, Henry V of England died at the Chateau de Vincennes, just outside the city.
Matters came to a head on 23 August 1572 with the St Bartholomew's Day Massacre, when Catholic mobs killed an estimated 3,000 Protestants on the instructions of King Charles VIII. His successor, King Henry III, attempted to find a peaceful solution but the city's population turned against him and forced him to flee in May 1588. The following year, he was assassinated by a fanatical Dominican monk, bringing the Valois line to a premature end.
Lutetia was renamed Paris in 212, after the local tribe, but the rest of the 3rd and 4th century was wracked by war and civil unrest. The city came under attack from barbarian invaders, prompting the construction of a defensive city wall. In 357 the Emperor Constantine's nephew Julian arrived in Paris to become the city's new governor. Although his uncle was famously the emperor who declared Christianity the official religion of the Empire, Julian "the Apostate" strove to roll back its advance. He became emperor in 361 but died in battle only two years later.
The Bois de Boulogne and the Bois de Vincennes were both transformed into large public parks. Although Haussmann was forced to resign in 1869 after financial irregularities, his scheme is largely responsible for the present-day look and layout of Paris.
Traditionally Paris was known as Paname in French slang, but this vulgar appellation is gradually losing currency. ( "I'm from Paname"?..)
An invading Prussian army heading for Paris was defeated shortly afterwards, clearing the way for the bloodiest phase of the Revolution. A guillotine was erected in what is now the Place de la Concorde and was used on 21 January 1793 to execute Louis XVI. Marie Antoinette followed in October 1793.
Under the rule of Philippe Auguste, who became king in 1180, a number of major building works were carried out in Paris. He built a new city wall and began the construction of the Louvre Palace, as well as paving streets and establishing a covered market at Les Halles (where it would remain until 1969).
In March 2001, Paris voted for a left-wing mayor for the first time since 1871. Bertrand Delanoë made history not only as the first left-wing mayor for 130 years, but for the fact that he is the first openly gay man to hold such a high public position in France. His election was widely seen as a rejection by the electorate of the corruption of the Chirac era. His manifesto promised to tackle the city administration's corruption and inefficiency, as well as reducing crime and improving education - all while keeping taxation stable.
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.
Less positively and very controversially, the ancient market at Les Halles was demolished and replaced with a notoriously ugly underground shopping mall, and the 209m Tour Montparnasse skyscraper was built leading to fears that Paris would become overrun with American-style skyscrapers (a move strongly resisted ever since).
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.
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.
With other European powers mobilising to crush the Revolution, which they saw as threatening their own monarchies, the political climate in Paris worsened as rumours of foreign plots and invasions took hold.