Another tree house for you today. This one was when we lived over on the farm, there was one mesquite tree big enough for a tree house ~ just barely~It was about 9 feet above the ground, there was a ladder up to a 5′ X 5′ landing with side rails. To be sure it was safe for the kids, I strung wire fencing underneath, sort of like a safety net. It was the fun place to be. It was still standing and in good shape years later when we moved.
All the kitties liked it up there. We had a slumber party more than once, I was there to be sure no one fell out.
The wonderful thing about having children is you finally get to have the things you wanted when you were little. Childhood can last a lifetime~