Have you ever looked out one of these moon shaped windows?When I was 4 or 5, my grandparents lived in a house where the bathroom facilities were outside. They did move to a farm house with indoor plumbing. Heritage Farm Park near us is a farm that has been turned into a community park. The historic manor house and barn still stand but most of the land is not used for recreational activities: baseball, soccer, football, golf and disc golf. There are trails for hiking and biking as well as picnic picnic facilities.
The old barn has windows, as well as vents in the brickwork which can be seen through the above window opening. The tractor windows (last image) are of a more recent vintage.