Related to this, I live in the same city where I went to college. About a month ago I walked around an entire day to all the places I used to hang out in college, including apartment complexes (not actually walking inside the apartments, of course). It was a very powerful experience. It is strange re-visiting places where I had very emotional experiences. I would see people and think they were people that I used to know, but of course they weren't. It was good to confront those ghosts.