The tower, which is popularly known to English residents as the "Jampot", is an old windmill but was never a success due to crosswinds on the hill, it is identified on maps as being an old mill.
In local parlance, the tower is famously referred to as the "Jampot". However, it's actually an old, unsuccessful windmill that was thwarted by strong gusts on the slope. Its presence is marked on maps as a relic of its former life as a windmill.