Grad school: I went to grad school at UMaine, and as that's where I now work, yes, I go back to campus- five days a week!
Undergrad: I got my degree from Cornell, and I've been back a few times. After graduating, I went to UMaine for grad school where I met now-DH. When we graduated from grad school, he went on for his PhD at Syracuse. I still had friends at Cornell/in Ithaca, so I went back to campus a bunch of times during the 5 years we lived in Syracuse. I've since been back when I took DD on a college tour.
Associate's degree: I got my AAS (three of them) at a small ag/vo-tech school. It was a high school with a 2 year post-grad degree program. It's next to my hometown, and my brother taught there for about 10 years, so I've been back quite a bit. I love to roam through the barns and remember being young, and I went to most of the open houses that the school had (my bro was a chef in the culinary program, and they always put on a big display for open house).