Scale: Vanishing Point
I learned about cloaking the vanishing point to leave the rest of the space to the imagination and further enlarge the scale. Like putting the vanishing point in shadow like in Blade Runner 2049.
The vanishing point can also be obscured by clouds as seen in Third Man on the Mountain (There is even a color queue for atmospheric perspective to show depth).
Or the vanishing point can be out of frame like in “Space 1999”.