Creative geography, or artificial landscape, is a film editing technique invented by the early Russian filmmaker Lev Kuleshov sometime around the 1920s.
[2] A notable and innovative example of creative geography is the TARDIS time machine on Doctor Who, which looks like a police call box on the outside but is much larger on the inside.
The viewer knows that the actors are stepping into a prop and then filming at a sound stage that represents the interior, but, via creative geography and suspension of disbelief, the transition is made seamless.
An extreme example of creative geography occurred in the film Just a Gigolo in a dialogue scene featuring the characters played by David Bowie and Marlene Dietrich.
In a separate shot, a different "extra actor" (playing the same person) walked into frame and gave the prop to Bowie.