What is the capital city of Spain?

Madrid is the capital city of Spain and serves as the political, economic, and cultural center of the country. It is home to the Spanish government, the Royal Family, and a number of significant cultural institutions, including the famous Prado Museum and the Royal Palace. Madrid's central location makes it a hub for transportation within Spain, connecting various regions both by road and rail.

While Barcelona, Seville, and Valencia are also major cities in Spain, they are not the capital. Barcelona is known for its architecture and vibrant culture, Seville is famous for its historical sites and flamenco dancing, and Valencia is recognized for its arts and sciences and the annual Las Fallas festival. Each of these cities has its own unique contributions to Spanish culture, but none holds the political significance or status of Madrid as the capital.