I have a semi city scene setup and wish to have some buildings such as apartments behind my subway track. The photo below is a building in front of the subway track and I wish to have the apartments behind the track and mounted on the wall. I have about 3/4" depth I can use for any building flats. It would be really nice to have some windows lit on the apartment, but is not absolutely a requirement. My train set up is on the floor and I have a thick baseboard at the bottom of the wall that is around 6" high and slightly over 3/4" thick. For the baseboard I am thinking of covering it with what will look like a stone wall and have the building flats above that. What are my options on what will look good.
You can just about make out the edge of the baseboard on the left side by the building roof in the photo.