National Mills Day is observed on May 11, 2025. National Mills Day is an event in the United Kingdom and occurs annually on the second Sunday in May. It started off as a single day event but in recent years has expanded to Saturday as well as Sunday, and is now promoted as National Mills Weekend. The event is coordinated by the Wind and Watermills section of the Society for the Protection of Ancient Buildings. Traditionally many preserved wind and watermills that are usually closed to the general public open their doors and offer an insight into the mills workings and history. (With material from: Wikipedia)
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