18th Century Watermill, on an island, near Malton, N Yorks. Island usually open, Mill building open alternate Sundays. FREE school visits & great events! Howsham Mill is a beautifully restored flour-mill which now generates renewable electricity and is an environmental education centre offering free school visits and a range of other educational events. What3Words for car park: acting.artichoke.unites Find new uses for old buildings by adapting them to generate renewable energy. Current project: Howsham Mill, North Yorkshire, an 18th century watermill which we are restoring for use as an environmental study/community centre. The waterwheel plus two Archimedean Screw turbines will provide power for the building itself, and an income from electricity sales to support the project in the future.