No, they are not real people but mannequins. Clever hey. As usual, I chopped the top off the building.
This tree house is terribly inferior to the one my father built for us kids. Ours had lino on the floor, packing crates covered with fabrics and other accessories that a young gay boy would want in his house.
There are still quite a lot of these, the red building, around. I think it was a stable. Naturally it would not have had a roller door, but swinging wooden doors. I think the horse went in the doors and the hay up top. What flowed out into the drain was probably quite unpleasant. Given how expensive Middle Park housing is now, I expect there is a car lift in there to lift one car up and allow another to park underneath.