A very wealthy/rich part of Northern Virginia, very close to Washington D.C. (Fairfax County). Many of the people that work with the government or at the White House live in Great Falls. Because Great Falls is a nice, private little town full of trees, many of the houses are gated & privatley surrounded by trees.
The kids in Great Falls go to Langley Highschool, a school known to be full of rich kids according to other kids who go to different highschools in that area.
person 1: Look at all those nice looking cars passing us by, going through that road!
person 2: yeah theyre all going to there mansions, in Great Falls.