Cornell is small? Depends upon what one measures. It's student body when in full session numbers close to 20,000, not huge compared to Big 10 standards but not small compared to most. In terms of land mass it's one of the larger campuses in the US. It's on-campus botanical gardens alone comprise 2,800 acres. Regardless of size, it's one of the most beautiful campuses in the US. Colgate's also an attractive campus not too far from Rochester. Syracuse is also very interesting, though small, it has some incredible architecture on its hillside location. When in Rochester, if you want to tour a smaller campus without a hockey team, the University of Rochester has a cute campus along the Genesee River.
There's a lot of campuses within a 2-hour drive of Rochester.