The Prado is a renowned art museum located in Madrid, Spain. It is one of the most visited sites in the city and houses some of the world's greatest works of art. The museum was founded in 1819 and has since become a major tourist attraction. It is home to masterpieces by artists such as Velázquez, Goya, El Greco, and Rubens. The Prado is also known for its extensive collection of Spanish art from the Middle Ages to the 19th century.