Windmill Day
Windmills had an important secondary function in many communities - they were used to send messages. The position of the sails on a windmill was used to convey news such as a death in the family, a wedding, or even a call to come to the mill as quickly as possible. Sail signals also warned of impending Nazi raids during World War II.
10 things you didn't know about windmills
It's Windmill Day. Time for some little known facts about windmills. The country most known for windmills is the Netherlands . The














