Among top 10 private schools, Stanford, Princeton and Duke have
the nicest campuses.
Yale actually isn't bad at all (except for the city).
Harvard's campus isn't that attractive.
Stanford, Princeton and Duke are all pretty much bubbled from outside, giving you a feel of a wonderland.
Yale and Caltech also look very nice.
MIT is downright boring.
Columbia, Penn and UChicago are big city schools.
You basically don't live on campus but on "city streets".