Wonderful to see this progress on the age!

I’ve been following it closely.
Random comments:
My suggestion for a better sky color (that’s hue -5 saturation +50 lightness +30 in Photoshop) – but many other colors should work as well, use your artistic judgement.
One thing that bothers me about the age as it currently is, that is clearly visible in this picture, is that the garden planes are invisible from the undersides. That makes you see things like the fall tree in this picture, or other people standing on the garden planes, float in mid-air, which I think takes away from the immersion. I have spent some work on trying to remedy that. Because I can’t think of a good way of what the underside of a garden plane should look like, I tried to minimize visibility of the undersides. When the area of a garden plane is small, its underside can perhaps be integrated into a wall of the building. Together with the desire to place some kind of gazebo at the spot from which you have the view that Escher depicts (and that is currently shown in Uru when you sit on the box), that has resulted in a complete reconfiguration of the garden planes.
Here’s a picture of my work in progress on that. It’s not finished and I’m not happy with it yet (in particular, the extension of the blue garden plane kinda mangles the “house that Tach added” and the column/shelf near the table). I have little time to work on this, so don’t wait for me to finish it, but if anyone wants to take some of my ideas and run with them, you are welcome.
Is the fall tree already planted in this picture? If so, it’s in the wrong place. It should be visible from this angle, as in Escher’s print. That should also give you a hint as to the size. Or is it supposed to be a different tree than Escher’s?