Second the Toledo recommendations. Spent 5 days in the Madrid area in January, and only one of those days was dedicated to Toledo. I wish I had been able to spend more time there. The architecture was amazing, and the landscape and scenery surrounding the old walled city area was gorgeous as well. If you have a chance, take your time and enjoy the city. Also, Iam no art aficionado by any stretch of the imagination , but I really enjoyed my time in the Prado as well. If you have a limited time to spend there, skip over some of the early period stuff and catch dedicate some time to El Busco, and especially De Goya's stuff, with an emphasis on the room dedicated to De Goya's black paintings. I think I spent 45 mins in that room, just absolutely mesmerized. Look for lunch spots that are a bit off the beaten path and have something on their el menu del dia that your interested in. Lots of really solid seafood, and portions were ridiculous as well. Royal Palace was beautiful, and I'm sure that it's touristy as shit and most experienced European travelers will look at this with a touch of disdain, but I enjoyed the hell out of the Flamenco show that we went to. Also, if you're a fan of futbol, the Real Madrid stadium tour was pretty amazing as well. Madrid was a lot of fun. The only drawback was the fact that pickpocketing is rampant as any theft under 500 euros isn't prosecuted, so there's no real deterrent from law enforcement. Other than that, I don't think I've ever felt safer in a large metropolitan area than I did in Madrid. It's an amazing city.