Madrid, the Capital and largest city of Spain, is located on the Manzanares River in the center of the country. Madrid is the seat of government and the residence of the Spanish monarch. Madrid’s influences in politics, economics, education, entertainment, environment, media, fashion, science, culture, and the arts contribute to its status as one of the world's major global cities. While Madrid possesses a modern infrastructure, it has preserved the look and feel of many of its historic neighborhoods and streets. Its landmarks include the Royal Palace of Madrid; the Royal Theatre and Opera House and the National Library building. Madrid also has a large number of world-class museums including the Prado Museum, the Museo Nacional Centro de Arte Reina Sofía and the Thyssen-Bornemisza Museum. The Cibeles Palace and Fountain have become the monument symbol of the city. Madrid boasts some of the liveliest nightlife in the world.