The Museo del Prado is the main Spanish national art museum, located in central Madrid. It features one of the world's finest collections of European art, dating from the 12th century to the early 19th century, based on the former Spanish Royal Collection, and unquestionably the best single collection of Spanish art. Founded as a museum of paintings and sculpture in 1819, it also contains important collections of other types of works. El Prado is one of the most visited sites in the world, and is considered one the greatest museums of art in the world.