Can you make solid invisible walls? (DM)

[Gambit37]

This probably sounds weird, but is it possible to make solid walls that look as though they don't exist? i.e. - you can see through them but if you were to walk into it you'd get the 'oof' sound and take damage?

I know I could achieve a similar effect using invisible teleporters targeted to the adjacent square, but for the maze that I want to create, it uses too many objects and doesn't work exactly right.

[Zyx]

You could put a closed door (with opened by other) perpendiculary, but be sure to put walls on both sides.