The Prado Museum, a must-see for anyone visiting Spain. This National Art Museum is on par with the grand art museums of Europe and this museum alone merits multiple visits to Madrid. No matter how often you have been to Madrid, you have to return! Endless (and priceless) art adorns its walls, offering tons of paintings by Goya, Titian, Velasquez, Rubens, El Greco, Raphael … Bring time and comfortable shoes as you will find yourself wandering the halls for hours! Oh, and like us, book online and walk right in on the side as less savvy visitors get in long lines on the front.