I think we're gonna try to go to Segovia (which has an awesome aqueduct) and/or Toledo. It's a little tricky fitting anything else in since tomorrow is X-mas and everything will be closed. Still need to see the Prado and Reina Sofia (the newer museum where most of the stuff I'm especially interested in, including Guernica, got moved to from the Prado), so that'll have to be the 26th. Might go to Segovia tomorrow since an aqueduct doesn't need to be "open" per se.
Side note -- 2hrs53mins from Barcelona to Madrid on the train today -- not too shabby. 300km/hr.
Yesterday we saw a bunch of Gaudí-designed houses and the Sagrada Familia. It's up in my top ten places ever with Angkor Wat, Borobudur, etc, but pictures really don't do it justice. Every picture I'd ever seen of it was of the exterior, but, for now, the inside is what's truly amazing. It could so easily have come out tacky, but it's just beautiful.
Here are some pics of the trip so far: