My mom and my younger brother died within a year of one another. Back then, I visited their graves often, although my mom's grave is some distance (she's buried with her mother). My brother is buried in a cemetary in my home town that we used to play in and ride our bikes in when we were kids. The first few times I visited him, I took long walks around the place, and was surprised to find a number of people I had known, some of whom I didn't know had died. I also found a number of graves of parents and relatives of schoolmates I had known years earlier. Back when my brother died in 1981, he was placed in a new area of the cemetary, and the space around him was quite sparse. In the past 25 years, it's filled in almost completely.
When my dad died three years ago, we put him with my brother, as was his plan, and I still stop in a couple of times a year, even if it's only for a few minutes.