Non-Treehouse

 We pass by this quite a bit. It is in a person's side yard. Looks like the beginning of a treehouse.

But at the top of the ladder-like steps, there is nothing!

It does look like some kind of little house on the ground under the tree, though.

Or maybe the entire scene is just to hang ornaments, of which they have many different kinds.

“Nailed in hope and framed in youth, It stands unfinished, yet speaks the truth. A ladder to dreams not yet climbed, A shelter for someday, undefined.”