The Unclosable Door (Sanssouci II)

By building fences and walls, we impose an artificial structure on an existing landscape. Is there a difference in our way of seeing these structures? Both allow us to see them as beautiful, but is it the same esthetics we are applying?

And, probably more importantly, is there a functional difference between natural grown and artificial structures?

And what happens when we consider a landscaped landscape? Is this wall really a wall?

Maybe I am wrong, but it seems to me that Nature doesn’t allow for closed doors.

Has René Magritte ever painted a closed door?