Why do I have recurring dreams at specific locations?

I have dreams every few nights or so that take place at my old elementary school where my mom used to work. Sometimes my dreams take place at our old house, in the same town where my school was. They would also take place in the trailer that we lived in after it was moved into our yard, beside our old house. The events in my dreams aren't really anything worth noting, but the locations are peculiar.

I also have dreams that take place in strangely familiar towns, houses, buildings and areas that almost seem like alternate versions of the town I grew up in and the town that I'm currently living in. It's hard to explain, but the appearance of these locations seem like they're either "inspired" by these two towns, or these locations are "alternate" (other planet, different location in the world, different dimension, etc.)

I did a bit of research and it seems like it's common to have dreams that take place at certain locations that bring back good memories or places that I may miss being at, which describes the school and two houses. I'm unsure about the "alternate" towns/locations, but they almost seem to be part of some sort of happy and upbeat type of world that I've imagined in my subconscious mind.

What do you think about these dreams?