Madrid [206] is the capital and largest city of Spain, as well as the capital of the autonomous community of the same name (Comunidad de Madrid). The population of the city is roughly 3.3 million with a metro area population of almost 6.5 million. 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.