Madrid is the capital city of Spain with a population of over 3 million people. It contains several important landmarks like the Royal Palace and Alcala Gate. Madrid serves as the political center of Spain and the residence of the Spanish monarch. The document then provides details on several other notable locations in Madrid like Puerta del Sol square, the Prado Museum, and Santiago Bernabeu football stadium. It also includes information about the Canary Islands archipelago off the coast of Africa, describing the largest islands of Tenerife, Fuerteventura, and Gran Canaria. Finally, it mentions that Barcelona is the second largest city in Spain and one of the most visited cities, known for landmarks like La Sagrada Famil