Waltham Abbey, Essex, England, United Kingdom
Royal Gunpowder Mills. Extensive canal and rail system dating from 1735, serving Britain's major explosives works. home to 3 of the UK's 26 cast iron acqueducts
Listen to the audio guide for Royal Gunpowder Mills, Waltham Abbey red plaque Free on WIP — starts by itself when you arrive, even with the screen off