A view from the rooftop of a tall building should grant a nice scouting (view radius) bonus.
Radio towers should be visible from far away.
I guess one issue here is that CDDA doesn’t have topography. Everything on the ground is on the same level. No hills, no valleys. And uhhhh how far away should a radio tower be visible from the rooftop of a tall building?
Could start with something simple, such as radio towers being revealed from quite far away. Are apartment buildings notably tall in CDDA?
A message should also appear in the log:
You see a radio tower far to the north.
You see the top of an apartment building some ways to the west.