Between

The woman and the horse are partially invisible because of the trees. But you can see the wrong parts.

The Blank Check (Le Blanc-seing) - Rene Magritte, 1965

I really like this idea. This is very different to Jos De Meys work. Where he's work is all about the manipulating the building. This work is about manipulating the form.
The normal would be the horse walking behind the trees, not being seen on the tree itself.
This work is only seen as outside. So this wouldn't be included as a world. Maybe if the trees where inside a building.

This work is more about the Impossible idea. The zones could be one from the real life and one from the image on the tree. How to get from the one to another is impossible. Any direction could be the entrance and exit.

www.planetperplex.com/en/impossible_images.html