When I was a teenager (ancient times) a buddy and I stumbled onto an old new in the box skyline kit for 4 buildings. We pooled our funds and bought it for Lionel layouts. He took the water tower and freight station, and I took the passenger station and control tower. These have survived over 50 years and have been fixed up a little but are basically original. I think the big think I did was add more internal bracing to straighten out a little warping.
I think they still look pretty good from 3 feet away.
I have also scratchbuilt a couple of industrial buildings using "strathmore" or poster board and Grandt Line or Tichy windows and doors.
Oops do not have photo of other industrial stuff.
The following is the back, trackside, of a line of commercial buildings in one of my towns. the fronts are not visible from any angle and are blank. These are 1/4 inch foam core, brick paper and again grandt line plastic windows and doors.
Finally there was an outfit called "Pioneer Valley" that sold paper kits and I bought a few.
The Pioneer Valley stuff is pretty crude compared to what you can do with the new printable paper kits today.