300 years of secret history combined with 175 acres of natural parkland and historic buildings. An interactive exhibition, guided tours and a 1940s Gunpowder Plot exhibition offer a unique day out for everyone. With 21 buildings of major historic importance, the site mixes fascinating history, exciting science and beautiful surroundings. Established in the 17th century and acquired by the Crown in 1787, the Royal Gunpowder Mills has an important place in the history of Great Britain and its home town of Waltham Abbey.