i've never seen a narrow castle (para-light house ?) like this except in my mom's side yard. her father or grandfather made them with shards of glass, bowls, and anything of the like. my brother scott relocated it behind the barn. it has a windmill-inspired twin still lodged in the ground at my mom's old house, in the yard not far from the driveway.
this one was where a squared off sandbox used to be, not far from the driveway when i was a little one. i always loved playing near it for hours at a time.