We have covered visual effects in movies before. The work that visual effects artists do is truly remarkable but nowhere near as impressive as the work that went into to creating the special effects of the movies you see below, without the use of a green screen.
These photos show how movies old and new created some of their most memorable scenes.
Jurassic Park
Superman IV
Alien
The Empire Strikes Back
Ghostbusters
Godzilla
Jaws
Metropolis
Mothra
Star Wars
Star Wars
The Howling
Batman Begins
Back to the Future III
source: imgur