Paris is the capital of France and the country's largest 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 limits largely unchanged since 1860, has an estimated population of 2,167,994 (January 2006), but the Paris aire urbaine (or metropolitan area) has a population of nearly 12 million, 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. According to 2005 estimates, the Paris urban area is Europe's biggest city economy, and is fifth in the world's list of cities by GDP.

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. The Paris Region hosts 37 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.

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. 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).

Paris has an oceanic climate and is affected by the North Atlantic Current, so the city rarely sees extremely high or low temperatures (such as the heat wave of 2003 and the cold wave of 2006).

Paris has warm summers with average high temperatures of 25 °C (77 °F) and lows of 15 °C (59 °F). Winters are chilly, but rarely below freezing point, with temperatures around 3 °C (37 °F) - 8 °C (46 °F). Spring and Autumn have mild days and cool evenings. Rainfall could occur at any time of the year, and, although not a very rainy city, Paris is known for its sudden showers. The yearly annual precipitation is 642 mm (25 in) with light rainfall fairly distributed throughout the year. Snowfall is a rare occurrence, but the city could see light snow or flurries without accumulation in some winters. The highest temperature ever in Paris was 40.4 °C (105 °F) on 28 July 1948, and the lowest was a −23.9 °C (−11 °F) on 10 December 1879.

City of Paris
Place de la Concorde.

* Place de la Bastille (4th, 11th and 12th arrondissements, right bank) a district of great historical significance, not only for Paris but for the whole of France. Because of its historical value, the square is often used for political demonstrations, including the massive anti-CPE demonstration of March 2006.
* 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 (Hotel 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.

The Sacré-Cœur Basilica.

* Le Marais (3rd and 4th arrondissements) is a trendy Right Bank district. 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.
* L'Opéra (9th arrondissement, right bank) is the area around the Opéra Garnier is a home to 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, 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.

Paris from the 11th century was a popular destination for traders, students and religious pilgrimages, but its 'tourist industry' began on a large scale only with the 19th-century appearance of rail travel, namely from the state's re-organisation of France's rail network, with Paris at its centre, from 1848. Among Paris' first mass attractions drawing international interest were the above-mentioned Expositions Universelles that were the origin of Paris' many monuments, namely the Eiffel Tower from 1889. These, in addition to the capital's Second Empire embellishments, did much to make the city itself the attraction it is today.

Paris' museums and monuments are among its highest-esteemed attractions; tourism has motivated both the city and national governments to create new ones. The city's most prized museum, the Louvre, welcomes over 8 million visitors a year, being by far the world's most-visited art museum. The city's cathedrals are another main attraction: Its Notre Dame de Paris and the Basilique du Sacré-Coeur receive 12 million and eight million visitors, respectively. The Eiffel Tower, by far Paris' most famous monument, averages over six million visitors per year and more than 200 million since its construction. Disneyland Resort Paris is a major tourist attraction not only for visitors to Paris but for visitors to the rest of Europe as well, with 14.5 million visitors in 2007.

The Louvre is one of the largest and most famous museums, housing many works of art, including the Mona Lisa (La Joconde) and the Venus de Milo statue. Works by Pablo Picasso and Auguste Rodin are found in Musée Picasso and Musée Rodin, respectively, while the artistic community of Montparnasse is chronicled at the Musée du Montparnasse. Starkly apparent with its service-pipe exterior, the Centre Georges Pompidou, also known as Beaubourg, houses the Musée National d'Art Moderne. Art and artifacts from the Middle Ages and Impressionist eras are kept in Musée Cluny and Musée d'Orsay, respectively, the former with the prized tapestry cycle The Lady and the Unicorn. Paris' newest (and third-largest) museum, the Musée du quai Branly, opened its doors in June 2006 and houses art from Africa, Asia, Oceania, and the Americas.

Many of Paris' once-popular local establishments have come to cater to the tastes and expectations of tourists, rather than local patrons. Le Lido, The Moulin Rouge cabaret-dancehall, for example, are a staged dinner theatre spectacle, a dance display that was once but one aspect of the cabaret's former atmosphere. All of the establishment's former social or cultural elements, such as its ballrooms and gardens, are gone today. Much of Paris' hotel, restaurant and night entertainment trades have become heavily dependent on tourism.

As the capital, Paris is the seat of France's national government. For the executive, the two chief officers each have their own official residences, which also serve as their offices. The President of France resides at the Élysée Palace in the 8th arrondissement, while the Prime Minister's seat is at the Hôtel Matignon in the 7th arrondissement. Government ministries are located in various parts of the city; many are located in the 7th arrondissement, near the Matignon.

The two houses of the French Parliament are also located on the Left Bank. The upper house, the Senate, meets in the Palais du Luxembourg in the 6th arrondissement, while the more important lower house, the Assemblée Nationale, meets in the Palais Bourbon in the 7th. The President of the Senate, the second-highest public official in France after the President of the Republic, resides in the "Petit Luxembourg", a smaller palace annex to the Palais du Luxembourg.

France's highest courts are located in Paris. The Court of Cassation, the highest court in the judicial order, which reviews criminal and civil cases, is located in the Palais de Justice on the Île de la Cité, while the Conseil d'État, which provides legal advice to the executive and acts as the highest court in the administrative order, judging litigation against public bodies, is located in the Palais Royal in the 1st arrondissement.

The Constitutional Council, an advisory body with ultimate authority on the constitutionality of laws and government decrees, also meets in the Palais Royal.