Most cupolas are purely decorative. They are a great way to breakup the visual uniformity of a roof. However the older ones were built for decoration as well as ventilation. In the days before roof vents, cupolas were the best way to ventilate a barn, stable or even a house. These Cupola plans can be used either for ventilation, if you cut a hole in the roof or just decoratively. These plans are structurally simple and most woodworkers should be able to build them without any problems.
To download the plans, right click on the link and select “Save As”.