Really enjoyed the museum. An outstanding selection of artwork. In particular, I would highly recommend the Mona Lisa painting - although I realize it was completed by one of Leonardo's students rather than Leonardo himself, I must admit I liked this version better than the one in the Louvre (and if art fans want to call me an art peasant for thinking this, I accept that). I stood and looked at the Prado's Mona Lisa for almost two minutes with no one around me, something I never would have been able to do at the Louvre. However, I would advise you to set aside at least three hours for the museum - there was a lot to see and I had to rush through at the end because the museum was closing.