Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be around 6.5 million. It is the third-largest city in the European Union, after London and Berlin, and its metropolitan area is the third-largest in the European Union after London and Paris.
The city is located on the Manzanares River in the centre of both the country and the Community of Madrid; this community is bordered by the autonomous communities of Castile and Leon and Castile-La Mancha. As the capital city of Spain, seat of government, and residence of the Spanish monarch, Madrid is also the political, economic and cultural centre of Spain. The current mayor is Ana Botella from the People's Party.
Madrid houses the headquarters of the World Tourism Organization (WTO), belonging to the United Nations Organization (UN), the SEGIB, the Organization of Ibero-American States (OEI), and the Public Interest Oversight Board (PIOB). It also hosts major international institutions regulators of Spanish: the Standing Committee of the Association of Spanish Language Academies, headquarters of the Royal Spanish Academy (RAE), the Cervantes Institute and the Foundation of Urgent Spanish.
While Madrid possesses a modern infrastructure, it has preserved the look and feel of many of its historic neighbourhoods and streets. Its landmarks include the Royal Palace of Madrid; the Royal Theatre with its restored 1850 Opera House; the Buen Retiro Park, founded in 1631; the 19th-century National Library building containing some of Spain's historical archives; a large number of National museums, and the Golden Triangle of Art.
The culture of Madrid was dominated by its Royal history, centre of the Spanish Empire. The Royal Palace, big places and buildings used by the Spanish Monarchy, enormous cathedrals and churches are plentiful in Madrid, as well as medieval architecture, although nowadays Madrid is just as much a cosmopolitan city as Berlin or London, full of new architecture, lifestyle and culture.
Madrid is best known for its great cultural and artistic heritage, a good example of which is the El Prado museum. Madrid also boasts some of the liveliest nightlife in the world.