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 6.271 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 spans a total of 604.3 km² (233.3 sq mi).

Madrid urban agglomeration has the 3rd largest GDP in the European Union and its influences in politics, education, entertainment, environment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities. Due to its economic output, high standard of living, and market size, Madrid is considered the major financial centre of Southern Europe and the Iberian Peninsula; it hosts the head offices of the vast majority of the major Spanish companies. Madrid is the most touristic city of Spain, the fourth-most touristic of the continent, and is the 10th most livable city in the world according to Monocle magazine, in its 2010 index. Madrid also ranks among the 12 greenest European cities in 2010. Madrid is currently bidding to host the 2020 Summer Olympics.

The city is located on the Manzanares river in the centre of both the country and the Community of Madrid (which comprises the city of Madrid, its conurbation and extended suburbs and villages); this community is bordered by the autonomous communities of Castile and León and Castile-La Mancha. As the capital city of Spain, seat of government, and residence of the Spanish monarch, Madrid is also the political center of Spain. The current mayor is Alberto Ruiz-Gallardón from the People's Party (PP).

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 Teatro Real (Royal theatre) with its restored 1850 Opera House; the Buen Retiro park, founded in 1631; the 19th-century National Library building (founded in 1712) containing some of Spain's historical archives; an archaeological museum; and the Golden Triangle of Art, located along the Paseo del Prado and comprising three art museums: Prado Museum, the Museo Nacional Centro de Arte Reina Sofía, a museum of modern art, and the Thyssen-Bornemisza Museum, housed in the renovated Villahermosa Palace.

There are several theories regarding the origin of the name "Madrid". According to legend Madrid was founded by Ocno Bianor (son of King Tyrrhenius of Tuscany and Mantua) and was named "Metragirta" or "Mantua Carpetana". Others contend that the original name of the city was "Ursaria" ("land of bears" in Latin), due to the high number of these animals that were found in the adjacent forests, which, together with the strawberry tree (Spanish: madroño), have been the emblem of the city from the Middle Ages.
The most ancient recorded name of the city Magerit (for *Materit or *Mageterit ?) comes from the name of a fortress built on the Manzanares River in the 9th century AD, and means "Place of abundant water".[21] If the form is correct, it could be a Celtic place-name from ritu- 'ford' (Old Welsh rit, Welsh rhyd, Old Breton rit, Old Northern French roy) and a first element, that is not clearly identified *mageto derivation of magos 'field' 'plain' (Old Irish mag 'field', Breton ma 'place'), or matu 'bear", that could explain the Latin translation Ursalia.

Nevertheless, it is now commonly believed[citation needed] that the origin of the current name of the city comes from the 2nd century BC. The Roman Empire established a settlement on the banks of the Manzanares river. The name of this first village was "Matrice" (a reference to the river that crossed the settlement). Following the invasions carried out by the Germanic Sueves and Vandals, as well as the Sarmatic Alans during the 5th century AD, the Roman Empire no longer had the military presence required to defend its territories on the Iberian Peninsula, and as a consequence, these territories were soon overrun by the Visigoths. The barbarian tribes subsequently took control of "Matrice". In the 7th century, the Islamic conquest of the Iberian Peninsula saw the name changed to "Mayrit", from the Arabic term ميرا "Mayra" (referencing water as a "trees" or "giver of life") and the Ibero-Roman suffix "it" that means "place". The modern "Madrid" evolved from the Mozarabic "Matrit", which is still in the Madrilenian gentilic.

Although the site of Madrid has been occupied since prehistoric times, the first historical data that concerns the city dates from the middle of the 9th century, when Mohammad I ordered the construction of a small palace (site occupied now by the Palacio Real). Around this palace there was built a small citadel (al-Mudaina). The palace was built overlooking the River Manzanares, which the Muslims called Mayrit meaning source of water (which in turn became Magerit, and then eventually Madrid). The citadel was conquered in 1085 by Alfonso VI in his advance towards Toledo. He reconsecrated the mosque as the church of the Virgin of Almudena (almudin, the garrison's granary), now the Catedral de la Almudena. In 1329 the Cortes first assembled in Madrid to advise Fernando IV. Jews and Moors continued to live in the city in their quarter, still known today as the "Moreria", until they were expelled.

When Philip II moved his court permanently to Madrid, the city began to be embellished with various palaces, convents, churches and other historic buildings, most of which have survived to the present. This Madrid, known as the Madrid de los Austrias, is the most artistic and culturally rich of all historical times to the city. The chief architect of the time was Juan Gomez de Mora, stylistic heir of Juan de Herrera and their sober traces, but he began to use Baroque elements.The work of this stage is the Plaza Mayor, and many Baroque religious buildings.
With the Bourbons began a new era in the city.The Royal Palace of Madrid and the buildings and monuments of the Paseo del Prado (Salón del Prado and Alcalá Gate) deserve special mention. They were constructed in a sober Baroque international style, often mistaken for neoclassical, by the Bourbon kings. Neoclassical also appears at this time, with Juan de Villanueva, who designed the building for El Prado Museum.
In the early 20th century began the construction of Gran Vía, with the task of freeing the old town. They used different styles that evolve over time: art nouveau, art deco, expressionist, etc. The Edificio Telefónica, of American inspiration, at the highest part of Gran Vía, is usually considered the first skyscraper in Europe. And finally (in Franco's period) the totalitarian style, the two skyscrapers in the Plaza de España.
Plans for the construction of a new cathedral for Madrid dedicated to the Virgin of Almudena began in the 16th century, but the slow construction did not begin until 1879. Francisco de Cubas, the Marquis of Cubas, was the architect who designed and directed the construction in a Gothic revival style. Construction ceased completely during the Spanish Civil War. The project was abandoned until 1950, when Fernando Chueca Goitia adapted the plans of de Cubas to a neoclassical style exterior to match the grey and white façade of the Palacio Real, which stands directly opposite. and was not completed until 1993, when the cathedral was consecrated by Pope John Paul II. On Calle Princesa, in the heart of the district of Moncloa, lies el Ejército del Aire, the headquarters of the Spanish Air Force. A scaled-down replica of the famous Monastery San Lorenzo del Escorial which lies about 50 kilometers northeast of Madrid, el Ejército del Aire is a classic example of Fascist Neoclassicism in Madrid.
The financial district in downtown Madrid between the streets Raimundo Fernández Villaverde, Orense, General Perón and Paseo de la Castellana, its original conception (and its name) to the "Plan General de Ordenación Urbana de Madrid", approved in 1946. The purpose of this plan was to create a huge block of modern office buildings with metro and railway connections in the expansion area of northern Madrid, just in front of Real Madrid stadium (currently named the Santiago Bernabéu Stadium) and beside the brand new government complex of Nuevos Ministerios. A botanical garden, a library and an opera house were also included in the plans, but these were never built.

Cuatro Torres Business Area is a business park that was completed in 2008. This block contains the tallest skyscrapers in Madrid and Spain (Torre Espacio, Torre de Cristal, Torre Sacyr Vallehermoso and Torre Caja Madrid). A new commercial and economic area with plenty of skylines is expected to be constructed during the next ten years according to the "Enlargement of Castellana Street Project".
Madrid Barajas International Airport Terminal 4, designed by Antonio Lamela and Richard Rogers (winning them the 2006 Stirling Prize), and TPS Engineers, (winning them the 2006 IStructE Award for Commercial Structures) was inaugurated on 5 February 2006. Terminal 4 is one of the world's largest terminal areas, with an area of 760,000 square meters (8,180,572 square feet) in two separate terminals: a main building, T4 (470,000 square meter), and satellite building, T4S (290,000 square meter), which are separated by approximately 2.5 km (2 mi). The new terminal is meant to give passengers a stress-free start to their journey. This is managed through careful use of illumination, available by glass panes instead of walls and numerous domes in the roof which allow natural light to pass through. With the new addition, Barajas is designed to handle 70 million passengers annually.

Culture
Madrid is one of Spain's most popular destinations and is renowned for its large quantity of cultural attractions.

Art Galleries and Museums
Madrid is considered one of the top European destinations concerning art museums. Best known is the Golden Triangle of Art, located along the Paseo del Prado and comprising three museums. The most famous one is the Prado Museum, known for such highlights as Diego Velázquez's Las Meninas and Francisco de Goya's La maja vestida and La maja desnuda. The other two museums are the Thyssen Bornemisza Museum, established from a mixed private collection, and the Reina Sofia Museum, where Pablo Picasso's Guernica hangs, returning to Spain from New York after more than two decades.

The Museo del Prado is a museum and art gallery that features one of the world's finest collections of European art, from the 12th century to the early 19th century, based on the former Spanish Royal Collection. The collection currently comprises around 7,600 paintings, 1,000 sculptures, 4,800 prints and 8,200 drawings, in addition to a large number of works of art and historic documents. El Prado is one of the most visited museums in the world, and it is considered to be among the greatest museums of art. It has the best collection of artworks by Goya, Velazquez, El Greco, Rubens, Titian, Hieronymus Bosch, José de Ribera and Patinir; and works by Rogier van der Weyden, Raphael, Tintoretto, Veronese, Caravaggio, Van Dyck, Albrecht Dürer, Claude Lorrain, Murillo and Zurbarán, among others.

The Museo Nacional Centro de Arte Reina Sofía (MNCARS) is the Spain's national museum of 20th century art. The museum is mainly dedicated to Spanish art. Highlights of the museum include excellent collections of Spain's greatest 20th century masters, Pablo Picasso, Salvador Dalí, Joan Miró, Juan Gris and Julio Gonzalez. Certainly the most famous masterpiece in the museum is Picasso's painting Guernica. The Reina Sofía also hosts a free-access library specializing in art, with a collection of over 100,000 books, over 3,500 sound recordings and almost 1,000 videos.

The Thyssen-Bornemisza Museum is an art museum that fills the historical gaps in its counterparts' collections: in the Prado's case this includes Italian primitives and works from the English, Dutch and German schools, while in the case of the Reina Sofia the Thyssen-Bornemisza collection, once the second largest private collection in the world after the British Royal Collection, includes Impressionists, Expressionists, and European and American paintings from the second half of the 20th century, with over 1,600 paintings.

The Royal Academy of Fine Arts of San Fernando currently functions as a museum and gallery that houses a fine art collection of paintings from the 15th to 20th century: Giovanni Bellini, Correggio, Rubens, Zurbarán, Murillo, Goya, Juan Gris, Pablo Serrano. The academy is also the headquarters of the Madrid Academy of Art. Francisco Goya was once one of the academy's directors, and, its alumni include Pablo Picasso, Salvador Dalí, Antonio Lopez Garcia, Juan Luna, and Fernando Botero.

The Royal Palace of Madrid is the official residence of Juan Carlos I of Spain, but he uses it only for official acts. It is a baroque palace full of artworks is one of the largest European Royal Palaces, which is characterized by its luxurious rooms and its rich collections of armors and weapons, pharmaceutical, silverware, watches, paintings, tapestries and the most comprehensive collection of Stradivarius in the world

The National Archaeological Museum of Spain collection includes, among others, Pre-historic, Celtic, Iberian, Greek and Roman antiquities and medieval (Visigothic, Muslim and Christian) objects. Highlights include a replica of the Altamira cave (the first cave in which prehistoric cave paintings were discovered), Lady of Elx (an enigmatic polychrome stone bust), Lady of Baza (a famous example of Iberian sculpture), Biche of Balazote (an iberian sculpture) and Treasure of Guarrazar (a treasure that represents the best surviving group of Early Medieval Christian votive offerings and the high point of Visigothic goldsmith's work).

The Museum of the Americas (Spanish: Museo de América) is a National museum that holds artistic, archaeological and ethnographic collections from the whole American continent, ranging from the Paleolithic period to the present day. The permanent exhibit is divided into five major thematical areas: an awareness of America, the reality of America, society, religion and communication.
The National Museum of Natural Sciences is the National Museum of Natural History of Spain. The research departments of the museum are: Biodiversity and Evolutionary Biology, Evolutionary Ecology, Paleobiology, Vulcanology and Geology.

The Naval Museum is managed by the Ministry of Defence. The Museum's mission is to acquire, preserve, investigate, report and display for study, education and contemplation, parts, sets and collections of historical, artistic, scientific and technical related to naval activity in order to disseminate the story sea of Spain; to help illustrate, highlight and preserve their traditions and promote national maritime awareness.

The Monastery of Las Descalzas Reales resides in the former palace of King Charles I of Spain and Isabel of Portugal. Their daughter, Joan of Austria, founded this convent of nuns of the Poor Clare order in 1559. Throughout the remainder of the 16th century and into the 17th century, the convent attracted young widowed or spinster noblewomen. Each woman brought with her a dowry. The riches quickly piled up, and the convent became one of the richest convents in all of Europe. It has many works of Renaissance and Baroque art, including a recumbent Christ by Gaspar Becerra, a staircase whose paintings were painted by unknown author (perhaps Velázquez) and they are considered the masterpiece of Spanish illusionist paint, and Brussels tapestries inspired in paintings by Rubens.

The Museo Lázaro Galdiano houses an encyclopedic collection specializing in decorative arts. The collection includes paintings by Leonardo da Vinci, Claudio Coello, Goya, Pedro Berruguete, El Greco, Hieronymus Bosch, Rembrandt, Thomas Gainsborough, Thomas Lawrence and Joshua Reynolds, sculptures by Giambologna and Verrocchio; 10th century Byzantine enamel; Arab and Byzantine ivory chests; Hellenistic, Roman, medieval, renaissance, baroque and romantic jewerly; Pisanello and Pompeo Leoni medals; Spanish and Italian ceramics; Italian and Arab clothes; and an interesting collection of weapons including the sword of Pope Innocent VIII.
The Museo Nacional de Artes Decorativas (National Museum of Decorative Arts) is one of the oldest museums in the city. It illustrates the evolution of the called "minor arts" (furniture, ceramics and glass, textile, etc.). Its 60 rooms expones 15,000 objects, of the approximate 40,000 which it has.

The Museo Nacional del Romanticismo (National Museum of Romanticism) contains a large collection of artefacts and art, focusing on daily life and customs of the nineteenth century, with special attention to the aesthetics about Romanticism.
The Museo Cerralbo houses a private collection of ancient works of art, artifacts and other antiquities collected by Enrique de Aguilera y Gamboa, XVII Cerralbo Marquis.

The Museo Nacional de Antropología(National Museum of Antropology) provides an overview of the different cultures in the world, with objects and human remains from around the world, highlighting a Guanche mummy of the island of Tenerife.

The Museo Sorolla is located in the building in which the Valencian Impressionist painter had his home and workshop. The collection includes, in addition to numerous works of Joaquín Sorolla, a large number of objects that possessed the artist, including sculptures by August Rodin.

CaixaForum Madrid is a post-modern art gallery in the centre of Madrid. It is sponsored by the Catalan-Balearic bank la Caixa and located next to the Salón del Prado. Although the CaixaForum is a modern building, it also exhibits retrospectives of artists from earlier time periods and has evolved into one of the most visited museums in Madrid. It was constructed by the Swiss architects Herzog & de Meuron from 2001 to 2007, which combined an old unused industrial building and hollowed it out at the base and inside and placed on top further floors which are encased with rusted steel. Next to it is an art installation of green plants growing on the wall of the neighbouring house by French botanist Patrick Blanc. The red of the top floors with the green of the wall next to it form a contrast. The green is in reflection of the neighbouring Royal Botanical Gardens.