Read our statement of condolence on the death of HRH Prince Philip, Duke of Edinburgh.
Around 160 activities are held as part of the Discovery Days Festival every year in October, including the Derbyshire half term holiday.
The festival has attracted up to 20,000 visitors in previous years. Activities vary from rare openings of historic buildings, to guided walks, talks and family events.
Please see the Derwent Valley Mills website for details.
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