When it comes to shaping the universe of a Sci-Fi film, the creators have plenty of options to build a world. They can use models, green screens, CGI and matte paintings. But not everything you see in a Sci-Fi film is fake. In a lot of cases, real-world locations are used to demonstrate some sort of futuristic location.
That means, you can get your movie-geek on and go visit some filming locations. Just remember, when you’re recreating the opening scenes of The Terminator, just make sure you keep your pants on. They frown on that sort of behaviour in L.A.