The Supreme Court building isn't present in Fallout 3 and it isn't mentioned. Was it just one of the buildings that is nothing but a nondescript pile of rubble, or in a part of a city that's blocked off. Whereabouts in real-world DC is the Supreme Court and does it look like there's anything there in the Fallout version?

Supreme court is not depicted for whatever reason.... here's an http://www.gamesradar.com/f/fallout-3-vs-reality-photo-comparison/a-20081204123919283009 that shows some of the real-life landmarks as they are in both game and life.