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 administrative limits (largely unchanged since 1860) has an estimated population of 2,167,994 (January 2006). The Paris unité urbaine (or urban area) extends well beyond the administrative city limits and has an estimated population of 9.93 million (in 2005). 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 by the PricewaterhouseCoopers accounting firm, the Paris urban area is Europe's biggest city economy, and is fifth in the world's list of cities by GDP.

The Paris Region, with €500.8 billion (US$628.9 billion), produced more than a quarter of the gross domestic product (GDP) of France in 2006.[9] The Paris Region hosts 37 of the Fortune Global 500 companies[10] 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 over 30 million foreign visitors per year. There are numerous iconic landmarks among its many attractions, along with world-famous institutions and popular parks.

Architecture

"Modern" Paris is the result of a vast mid-19th 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 vast urbanisation levelled entire quarters to make way for wide avenues lined with neo-classical stone buildings of bourgeoise standing; most of this 'new' Paris is the Paris we see today. These Second Empire plans are in many cases still applied today, as the city of Paris is still imposing the then-defined "alignement" law (building facades placed according to a pre-defined street width) on many new constructions. A building's height was also defined according to the width of the street it lines, and Paris' building code has seen few changes since the mid-19th century to allow for higher constructions. It is for this reason that Paris is mainly a "flat" city.

Paris' unchanging borders, strict building codes and lack of developable land have together contributed in creating a phenomenon called muséification (or "museumification") as, at the same time as they strive to preserve Paris' historical past, existing laws make it difficult to build within the city limits the larger buildings and utilities needed for a growing population[citation needed]. Many of Paris' institutions and economic infrastructure are already located in, or are planning on moving to, the suburbs. The financial (La Défense) business district, the main food wholesale market (Rungis), major renowned schools (École Polytechnique, HEC, ESSEC, INSEAD, etc.), world famous research laboratories (in Saclay or Évry), the largest sport stadium (Stade de France), and some ministries (namely the Ministry of Transportation) are located outside of the city of Paris. The National Archives of France are due to relocate to the northern suburbs before 2010. The need for a larger Paris is largely acknowledged by the French government. As of November 2007, discussions for such a larger Paris have begun, though which suburbs should be included in this larger Paris is unresolved. In any case, such an extension will not occur before the French city-hall elections, scheduled in the spring of 2008.