Paris  is the capital of France and the country's most populous city. It is situated on the river Seine, in northern France, at the heart of the Île-de-France region (also known as the "Paris Region"; French: Région parisienne). The city of Paris, within its administrative limits largely unchanged since 1860, has an estimated population of 2,203,817 (January 2006), but the Paris aire urbaine (or metropolitan area) has a population of 11,769,433 (January 2006), and is one of the most populated metropolitan areas in Europe.
An important settlement for more than two millennia, Paris is today one of the world's leading business and cultural centres, and its influence in politics, education, entertainment, media, fashion, science and the arts all contribute to its status as one of the world's major global cities.
Paris and the Paris Region, with €533.6 billion (US$731.3 billion) in 2007, produces more than a quarter of the gross domestic product (GDP) of France. According to 2005 estimates, the Paris urban agglomeration is Europe's biggest city economy, and is fifth in the world's list of cities by GDP. The Paris Region hosts 38 of the Fortune Global 500 companies in several business districts, notably La Défense, the largest purpose-built business district in Europe. Paris also hosts many international organizations such as UNESCO, the Organisation for Economic Co-operation and Development (OECD), the International Chamber of Commerce (ICC) and the informal Paris Club.
Paris is one of the most popular tourist destinations in the world, with 45 million tourists every year in the Paris Region, 60% of whom are foreign visitors. There are numerous iconic landmarks among its many attractions, along with world-famous institutions and popular parks.

Geography
Paris is located in the north-bending arc of the river Seine and includes two islands, the Île Saint-Louis and the larger Île de la Cité, which form the oldest part of the city. Overall, the city is relatively flat, and the lowest elevation is 35 m (115 ft) above sea level. Paris has several prominent hills, of which the highest is Montmartre at 130 m (427 ft).
Paris, excluding the outlying parks of Bois de Boulogne and Bois de Vincennes, covers an oval measuring 86.928 km2 (34 sq mi) in area.[citation needed] The city's last major annexation of outlying territories in 1860 not only gave it its modern form but created the twenty clockwise-spiralling arrondissements (municipal boroughs). From the 1860 area of 78 km2 (30 sq mi), the city limits were expanded marginally to 86.9 km2 (34 sq mi) in the 1920s. In 1929, the Bois de Boulogne and Bois de Vincennes forest parks were officially annexed to the city, bringing its area to the present 105.39 km2 (41 sq mi).

Architecture
Much of contemporary Paris is the result of the vast mid-nineteenth century urban remodelling.

For centuries, the city had been a labyrinth of narrow streets and half-timber houses, but, beginning in 1852, the Baron Haussmann's urbanisation program involved leveling entire quarters to make way for wide avenues lined with neo-classical stone buildings of bourgeoisie standing. Most of this 'new' Paris is the Paris we see today. The building code has seen few changes since, and the Second Empire plans are in many cases still followed. The "alignement" law is still in place, which regulates building facades of new constructions according to a pre-defined street width. A building's height is limited according to the width of the streets it lines, and under the regulation, it is difficult to get an approval to build a taller building.
Many of Paris's important institutions are located outside the city limit. The financial (La Défense) business district, the main food wholesale market (Rungis), schools (École Polytechnique, HEC, ESSEC, INSEAD), research laboratories (in Saclay or Évry), the largest stadium (the Stade de France), and government offices (Ministry of Transportation) are located in the city's suburbs.
Districts and historical centres

City of Paris
Place de la Bastille (4th, 11th and 12th arrondissements, right bank) is a district of great historical significance, not only for Paris, but for France, too. Because of its symbolic value, the square has often been a site of political demonstrations.
Champs-Élysées (8th arrondissement, right bank) is a seventeenth century garden-promenade-turned-avenue connecting the Concorde and Arc de Triomphe. It is one of the many tourist attractions and a major shopping street of Paris.
Place de la Concorde (8th arrondissement, right bank) is at the foot of the Champs-Élysées, built as the "Place Louis XV", site of the infamous guillotine. The Egyptian obelisk is Paris' "oldest monument". On this place, on either side of the Rue Royale, there are two identical stone buildings: The eastern one houses the French Naval Ministry, the western the luxurious Hôtel de Crillon. Nearby Place Vendôme is famous for its fashionable and deluxe hotels (Hôtel Ritz and Hôtel de Vendôme) and its jewellers. Many famous fashion designers have had their salons in the square.
Les Halles (1st arrondissement, right bank) was formerly Paris' central meat and produce market, and, since the late 1970s, a major shopping centre around an important metro connection station (Châtelet-Les Halles, the biggest in Europe). The past Les Halles was destroyed in 1971 and replaced by the Forum des Halles. The central market of Paris, the biggest wholesale food market in the world, was transferred to Rungis, in the southern suburbs.
Le Marais (3rd and 4th arrondissements) is a trendy Right Bank district. It is architecturally very well-preserved, and some of the oldest houses and buildings of Paris can be found there. It is a very culturally open place.
Avenue Montaigne (8th arrondissement), next to the Champs-Élysées, is home to luxury brand labels such as Chanel, Louis Vuitton (LVMH), Dior and Givenchy.
Montmartre (18th arrondissement, right bank) is a historic area on the Butte, home to the Basilique du Sacré-Cœur. Montmartre has always had a history with artists and has many studios and cafés of many great artists in that area.
Montparnasse (14th arrondissement) is a historic Left Bank area famous for artists' studios, music halls, and café life. The large Montparnasse - Bienvenüe métro station and the lone Tour Montparnasse skyscraper are located there.
Avenue de l'Opéra (9th arrondissement, right bank) is the area around the Opéra Garnier and the location of the capital's densest concentration of both department stores and offices. A few examples are the Printemps and Galeries Lafayette grands magasins (department stores), and the Paris headquarters of financial giants such as Crédit Lyonnais and American Express.
Quartier Latin (5th and 6th arrondissements, left bank) is a twelfth-century scholastic centre formerly stretching between the Left Bank's Place Maubert and the Sorbonne campus. It is known for its lively atmosphere and many bistros. Various higher-education establishments, such as the École Normale Supérieure, TELECOM ParisTech, and the Jussieu university campus, make it a major educational centre in Paris.
Faubourg Saint-Honoré (8th arrondissement, right bank) is one of Paris' high-fashion districts, home to labels such as Hermès and Christian Lacroix.

In the Paris area
La Défense (straddling the communes of Courbevoie, Puteaux, and Nanterre, 2.5 km (2 mi) west of the city proper) is a key suburb of Paris and is one of the largest business centres in the world. Built at the western end of a westward extension of Paris' historical axis from the Champs-Élysées, La Défense consists mainly of business high-rises. Initiated by the French government in 1958, the district hosts 3,500,000 m2 (37,673,686 sq ft) of offices, making it the largest district in Europe specifically developed for business. The Grande Arche (Great Arch) of la Défense, which houses a part of the French Transports Minister's headquarters, ends the central Esplanade, around which the district is organised.

Plaine Saint-Denis (straddling the communes of Saint-Denis, Aubervilliers, and Saint-Ouen, immediately north of the 18th arrondissement, across the Périphérique ring road) is a former derelict manufacturing area that has undergone large-scale urban renewal in the last 10 years. It now hosts the Stade de France, around which is being built the new business district of LandyFrance, with two RER stations (on RER line B and D) and possibly some skyscrapers. In the Plaine Saint-Denis are also located most of France's television studios as well as some major movie studios.
Val de Seine (straddling the 15th arrondissement and the communes of Issy-les-Moulineaux and Boulogne-Billancourt to the south-west of central Paris) is the new media hub of Paris and France, hosting the headquarters of most of France's TV networks (TF1 in Boulogne-Billancourt, France 2 in the 15th arrondissement, Canal+ and the international channels France 24 and Eurosport in Issy-les-Moulineaux), as well as several telecommunication and IT companies such as Neuf Cegetel in Boulogne-Billancourt or Microsoft's Europe, Africa & Middle East regional headquarters in Issy-les-Moulineaux.
Monuments and landmarks
Three of the most famous Parisian landmarks are the twelfth-century cathedral Notre Dame de Paris on the Île de la Cité, the Napoleonic Arc de Triomphe and the nineteenth-century Eiffel Tower. The Eiffel Tower was a "temporary" construction by Gustave Eiffel for the 1889 Universal Exposition, but the tower was never dismantled and is now an enduring symbol of Paris. The Historical axis is a line of monuments, buildings, and thoroughfares that run in a roughly straight line from the city-centre westwards: The line of monuments begins with the Louvre and continues through the Tuileries Gardens, the Champs-Élysées, and the Arc de Triomphe, centred in the Place de l'Étoile circus. From the 1960s, the line was prolonged even further west to the La Défense business district dominated by square-shaped triumphal Grande Arche of its own; this district hosts most of the tallest skyscrapers in the Paris urban area. The Invalides museum is the burial place for many great French soldiers, including Napoleon, and the Panthéon church is where many of France's illustrious men and women are buried. The former Conciergerie prison held some prominent Ancien Régime members before their deaths during the French Revolution. Another symbol of the Revolution are the two Statues of Liberty located on the Île des Cygnes on the Seine and in the Luxembourg Garden. A larger version of the statues was sent as a gift from France to America in 1886 and now stands in New York City's harbour.The Palais Garnier built in the later Second Empire period, houses the Paris Opera and the Paris Opera Ballet, while the former palace of the Louvre now houses one of the most renowned museums in the world. The Sorbonne is the most famous part of the University of Paris and is based in the centre of the Latin Quarter. Apart from Notre Dame de Paris, there are several other ecclesiastical masterpieces including the Gothic thirteenth-century Sainte-Chapelle palace chapel and the Église de la Madeleine.

Parks and gardens
Two of Paris' oldest and famous gardens are the Tuileries Garden, created in the 16th century for a palace on the banks of the Seine near the Louvre, and the Left bank Luxembourg Garden, another former private garden belonging to a château built for the Marie de' Medici in 1612. The Jardin des Plantes, created by Louis XIII's doctor Guy de La Brosse for the cultivation of medicinal plants, was Paris' first public garden.
A few of Paris' other large gardens are Second Empire creations: The former suburban parks of Montsouris, Parc des Buttes Chaumont, and Parc Monceau (formerly known as the "folie de Chartres") are creations of Napoleon III's engineer Jean-Charles Alphand. Another project executed under the orders of Baron Haussmann was the re-sculpting of Paris' western Bois de Boulogne forest-parklands; the Bois de Vincennes, on the city's opposite eastern end, received a similar treatment in years following.
Newer additions to Paris' park landscape are the Parc de la Villette, built by the architect Bernard Tschumi on the location of Paris' former slaughterhouses, the Parc André Citroën, and gardens being laid to the periphery along the traces of its former circular "Petite Ceinture" railway line: Promenade Plantée.