MAking different Levels with different "Maps" "Landscapes"

I have a Qeustion for the Future Guys. I dont even have finnished the First Map, but i allready ask myself this Question… Can i switch different “Landscapes” in the Game? Like Levels? Like if you reach one Point on one Programmed Landscape, You switch to another one i Programmed. Sry English is not my Mothertangue.