Prado, Thyssen-Bornemisza and the Reina Sofia.

Art. I never did very well in that subject, and the best true-to-life drawings I can muster still look like glorified stick figures.
Even though I'm not much of an art buff, I still went to the golden 3 and I'm glad I did.

Madrid has Prado, Thyssen Bornemisza and Reina Sofia museums all within walking distance of each other. You can purchase a 3 musuem pass for only 12,00 euros and it's worth it!

The Thyssen has works from Monet, Renoir, Van Gogh, Gris, and Gauguin.

The Reina Sofia is actually a converted hospital and it houses works from Salvador Dali, Picasso and Miro. This is the museo you want to go to! The Reina Sofia houses Picasso's famous Guernica, and it's one good reason to fly to Madrid.

The Prado is free on Sundays and I really can't remember what was there since it was so busy, but I heard if you're lucky, when you go the Picasso exhibit might be open.